SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
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SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
active
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
adapter
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
adb
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
address
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
all
SQL Server Truncate All Table Data
Today I want to truncate ( delete all table data) in a large SQL Server database instance. Plain delete statements are not going to work as there is a big nu...
android
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
Java String Util Class
Unfortunately, Java does not include a proper String manipulation class in its Java SE SDK. I really do not understand why… However, we see so many implement...
Extend SQLiteOpenHelper as a singleton class in Android
Update: 2012-07-27
Launch Logcat programmatically in Android
Today I wanted to write logcat output to a file while my application is running. To do so I executed the following code:
Android pre-populated Database
Today I am going to show you how to create an android application which comes with a pre-populated database. The database file has to be stored in assets dir...
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Android Custom Dialogs Part 1: Set value
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Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
Android External Storage Free Space
Today I wanted to store some images to SD card and I wanted to find the available space:
Android get SQLite Library Version
```java /** * get the version of the SQLite Library that is installed in the android * system * * @return version , for example 3.5.2 */ public ...
annotation
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
apache
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
Install Apache Solr as Windows Service using NSSM
Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
archive
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
arraylist
Object ArrayList Sort
Let’s say we have a simple class called Person public class Person{ public String name; public int age; public Person(String name, int age) { this.nam...
asset
Android pre-populated Database
Today I am going to show you how to create an android application which comes with a pre-populated database. The database file has to be stored in assets dir...
audio
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
auth
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
authentication
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
availabe
Android External Storage Free Space
Today I wanted to store some images to SD card and I wanted to find the available space:
balancing
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
bash
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
Ubuntu Debian Linux useful commands
Updated: 2015-09-08
basic
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
beats
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
blog
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
bluetooth
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
buffer
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
card
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
centos
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
certificate
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
char
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
character
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
check
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
check constraint
SQL Server Truncate All Table Data
Today I want to truncate ( delete all table data) in a large SQL Server database instance. Plain delete statements are not going to work as there is a big nu...
cifs
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
client
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
collection
Object ArrayList Sort
Let’s say we have a simple class called Person public class Person{ public String name; public int age; public Person(String name, int age) { this.nam...
colour
Vi set color scheme , line numbers and syntax highlighting
Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
column
SQL Server Select Table information
Today I am going to show you how do we obtain schema information in SQL Server 2005/2008. If you want to select all table names from a specific schema you ne...
command
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
Ubuntu Debian Linux useful commands
Updated: 2015-09-08
compile
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
conf
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
configure
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
conflict
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
connection
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
connectivity
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
console
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
constraint
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
container
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
content-length
Java get file size and download using HTTP
Today I wanted to download a file using Http protocol but before that determine its size. First aff all I open an Http connection and get file size using Con...
control
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
convert
Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
copy
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
core
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
corrupt
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
create
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
Install Apache Solr as Windows Service using NSSM
Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
curl
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
cyanogenmod
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
daemon
Install Apache Solr as Windows Service using NSSM
Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
data
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
Windows 7 64bit ODBC Data sources
Today I was trying to create and ODBC Data Source to a database using 32 bit database drivers. When I accessed ODBC Data Sources (32bit) from Control Panel, ...
SQL Server Truncate All Table Data
Today I want to truncate ( delete all table data) in a large SQL Server database instance. Plain delete statements are not going to work as there is a big nu...
database
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
MongoDB replica error RS102 too stale to catch up during full recovery
We run MongoDB 2.6.0 on a production system configured with a replica set of 3 members: Primary Secondary Arbiter
Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
Windows 7 64bit ODBC Data sources
Today I was trying to create and ODBC Data Source to a database using 32 bit database drivers. When I accessed ODBC Data Sources (32bit) from Control Panel, ...
SQL Server Select Table information
Today I am going to show you how do we obtain schema information in SQL Server 2005/2008. If you want to select all table names from a specific schema you ne...
Extend SQLiteOpenHelper as a singleton class in Android
Update: 2012-07-27
Android pre-populated Database
Today I am going to show you how to create an android application which comes with a pre-populated database. The database file has to be stored in assets dir...
Android get SQLite Library Version
```java /** * get the version of the SQLite Library that is installed in the android * system * * @return version , for example 3.5.2 */ public ...
datawindow
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
date
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
dd
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
debian
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
Ubuntu Debian Linux useful commands
Updated: 2015-09-08
debug
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
delete
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
SQL Server Truncate All Table Data
Today I want to truncate ( delete all table data) in a large SQL Server database instance. Plain delete statements are not going to work as there is a big nu...
deleted
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
df
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
directory
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
disk
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
docker
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
domain
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
download
Java get file size and download using HTTP
Today I wanted to download a file using Http protocol but before that determine its size. First aff all I open an Http connection and get file size using Con...
driver
Windows 7 64bit ODBC Data sources
Today I was trying to create and ODBC Data Source to a database using 32 bit database drivers. When I accessed ODBC Data Sources (32bit) from Control Panel, ...
dump
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
easter
Java Calculate Orthodox Easter Date
Today I wondered if there is an algorithm to calculate the date of Orthodox Easter. After some searching in the web I found the algorithm and converted it to...
easter date
Java Calculate Orthodox Easter Date
Today I wondered if there is an algorithm to calculate the date of Orthodox Easter. After some searching in the web I found the algorithm and converted it to...
eclipse
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
editor
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
efficient
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
elastic
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
elasticsearch
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
elk
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
empty
Java String Util Class
Unfortunately, Java does not include a proper String manipulation class in its Java SE SDK. I really do not understand why… However, we see so many implement...
encrypt
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
error
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
escape
Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
export
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
expression
Perl UTF-8 and Regular Expressions
Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
extract
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
ffmpeg
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
file
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
filter
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
fix
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
foreign
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
format
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
free
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
generator
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
geo
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
geoip
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
geolite
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
geolite2
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
geolocation
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
git
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
gitlab
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
gmail
Java send smtp mail using Gmail
Today I wanted to make a mail notification mechanism for a project of mine. After some web searching I stumbled upon a mkyong.com tutorial where he uses SMTP...
Send email from VBScript using SMTP and Gmail
Today I wanted to send an email using SMTP from my gmail account. I searched the web and I found this and this and this which helped me a lot. So this is the...
go
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
golang
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
greek
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
grid
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
haproxy
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
header
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
high
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
highlight
Vi set color scheme , line numbers and syntax highlighting
Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
highlighting
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
http
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
Java get file size and download using HTTP
Today I wanted to download a file using Http protocol but before that determine its size. First aff all I open an Http connection and get file size using Con...
httpd
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
https
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
iburst
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
image
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
import
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
index
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
ini
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
install
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
Install Apache Solr as Windows Service using NSSM
Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
Install Jboss 5.1.0.GA to Windows 7
Today I am going to show you how to install Jboss 5.1.0.GA on a Windows 7 machine.
ip
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
java
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
Java send smtp mail using Gmail
Today I wanted to make a mail notification mechanism for a project of mine. After some web searching I stumbled upon a mkyong.com tutorial where he uses SMTP...
Java String Util Class
Unfortunately, Java does not include a proper String manipulation class in its Java SE SDK. I really do not understand why… However, we see so many implement...
Java Calculate Orthodox Easter Date
Today I wondered if there is an algorithm to calculate the date of Orthodox Easter. After some searching in the web I found the algorithm and converted it to...
Java get file size and download using HTTP
Today I wanted to download a file using Http protocol but before that determine its size. First aff all I open an Http connection and get file size using Con...
Android pre-populated Database
Today I am going to show you how to create an android application which comes with a pre-populated database. The database file has to be stored in assets dir...
Android Custom Dialogs Part 1: Set value
No Content Found
Android External Storage Free Space
Today I wanted to store some images to SD card and I wanted to find the available space:
Object ArrayList Sort
Let’s say we have a simple class called Person public class Person{ public String name; public int age; public Person(String name, int age) { this.nam...
jax
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
jax-ws
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
jboss
Install Jboss 5.1.0.GA to Windows 7
Today I am going to show you how to install Jboss 5.1.0.GA on a Windows 7 machine.
jelastic
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
json
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
junit
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
kernel
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
key
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
kibana
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
let's encrypt
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
lets
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
library
Android get SQLite Library Version
```java /** * get the version of the SQLite Library that is installed in the android * system * * @return version , for example 3.5.2 */ public ...
line
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
link
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
linux
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
MongoDB replica error RS102 too stale to catch up during full recovery
We run MongoDB 2.6.0 on a production system configured with a replica set of 3 members: Primary Secondary Arbiter
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
SublimeText 3 Fix greek (and other languages) accented chars input
Yesterday I installed SublimeText 3 editor (build 3143) in my PC and the first thing I realised was that I could not type any Greek accented characters. Thus...
Let’s Encrypt SSL certificate without root or sudo privileges
Five days ago we had to renew a number of SSL certificates using free Let’s Encrypt SSL authority to a few Apache servers which were installed in Jelastic Pa...
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
Linux get hard disk statistics using Python
Today I wanted to collect disk usage information and send them to a remote server script. I used df command to collect disk usage information and Python to s...
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
Vi set color scheme , line numbers and syntax highlighting
Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
Perl UTF-8 and Regular Expressions
Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
Ubuntu Debian Linux useful commands
Updated: 2015-09-08
load
Use HAProxy and Docker to load balance requests to Solr and SolrCloud
We use Solr 4.6 with SolrCloud configuration in a production system. You may say: “It is hight time you upgraded to the latest version, isn’t it?”. And you w...
location
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
log
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
Launch Logcat programmatically in Android
Today I wanted to write logcat output to a file while my application is running. To do so I executed the following code:
logcat
Launch Logcat programmatically in Android
Today I wanted to write logcat output to a file while my application is running. To do so I executed the following code:
logstash
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
lubuntu
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
lucene
Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
m2e
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
m2e-apt
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
mac
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
Java send smtp mail using Gmail
Today I wanted to make a mail notification mechanism for a project of mine. After some web searching I stumbled upon a mkyong.com tutorial where he uses SMTP...
manipulation
Java String Util Class
Unfortunately, Java does not include a proper String manipulation class in its Java SE SDK. I really do not understand why… However, we see so many implement...
mapper
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
maven
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
maxmind
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
maxpoll
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
merge
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
mergetool
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
message
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
method
Java String Util Class
Unfortunately, Java does not include a proper String manipulation class in its Java SE SDK. I really do not understand why… However, we see so many implement...
metricbeat
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
microsoft
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
migrate
Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0
Update 2016-05-13: The following procedure works perfectly for migrations from version 8.0.4 to 8.7.5
minpoll
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
mmdblookup
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
modified
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
module
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
mongo
MongoDB replica error RS102 too stale to catch up during full recovery
We run MongoDB 2.6.0 on a production system configured with a replica set of 3 members: Primary Secondary Arbiter
mongodb
MongoDB replica error RS102 too stale to catch up during full recovery
We run MongoDB 2.6.0 on a production system configured with a replica set of 3 members: Primary Secondary Arbiter
monitor
Creating a Beat based on Metricbeat resolving Init and create metricset failures
I suspect that you are reading this post after having trouble creating a new Elastic Beat based on Metricbeat. Bud do not worry! We have you covered and solv...
mount
Linux mount Windows shared directory via cifs and samba
Updates: 2013-08-08: Added sec=ntlm 2014-09-04: Added domain=mydomain parameter in order to connect to Active Directory domain
moved
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
mp3
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
mp4
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
my
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
mysql
MySQL connection ERROR 1129
Today I had to configure a MySQL database cluster and I faced the following error
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
netbeans
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
network
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
Java send smtp mail using Gmail
Today I wanted to make a mail notification mechanism for a project of mine. After some web searching I stumbled upon a mkyong.com tutorial where he uses SMTP...
Java get file size and download using HTTP
Today I wanted to download a file using Http protocol but before that determine its size. First aff all I open an Http connection and get file size using Con...
Bluetooth adapter device name and MAC address in Android
Today I am going to show you how to get the bluetooth adapter device name (if exists) and MAC address programmatically in Android. Note that this code will ...
Check Network connectivity and obtain Wifi MAC address in Android
Updated: 2012-05-09
new
Export Untracked, modified, moved and deleted files from a Git repository to archive
Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
newline
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
nginx
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
nssm
Install Apache Solr as Windows Service using NSSM
Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
ntp
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
ntpdate
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
ntpq
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
object
Object ArrayList Sort
Let’s say we have a simple class called Person public class Person{ public String name; public int age; public Person(String name, int age) { this.nam...
odbc
Windows 7 64bit ODBC Data sources
Today I was trying to create and ODBC Data Source to a database using 32 bit database drivers. When I accessed ODBC Data Sources (32bit) from Control Panel, ...
omelasticsearch
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
orthodox
Java Calculate Orthodox Easter Date
Today I wondered if there is an algorithm to calculate the date of Orthodox Easter. After some searching in the web I found the algorithm and converted it to...
output
Launch Logcat programmatically in Android
Today I wanted to write logcat output to a file while my application is running. To do so I executed the following code:
parse
Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Rsyslog and enrich them with Geolocation information regarding the city and the ISP an ...
Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP
Today we wanted to parse some json logs which we had in a file using Logstash and enrich them with Geolocation information regarding the city and the ISP an...
JSON remove new lines via Linux and use it as string variable and as param in cURL POST request
Today I had to parse a JSON response in a JUnit test and then reuse it in a cURL command line call. Unfortunately I could not read the JSON response from a f...
paste
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
pb
PowerBuilder 10 Get and Set System Language
Today I wanted to retrieve the selected system language from PowerBuilder 10. To accomplish that I had to do some search in the web. After a long period I fo...
pb10
PowerBuilder 10 Get and Set System Language
Today I wanted to retrieve the selected system language from PowerBuilder 10. To accomplish that I had to do some search in the web. After a long period I fo...
perl
Perl UTF-8 and Regular Expressions
Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
php
Change timezone to Apache server , PHP and MySql in XAMPP
I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
pi
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
Επιτέλους! (at last! in greek) After a month and a half of waiting, I received my Raspberry Pi! Now I am going to show you how to install Raspbian Wheezy Lin...
plugin
Configure Eclipse in order to build MapStruct in Java projects
Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
pool
Install, configure and troubleshoot NTP servers in Debian Linux
If you are reading this article, perhaps you have searched a lot about NTP server installation in Linux, issues and problems encountered and how to troublesh...
port
Nginx https reverse proxy to Wordpress with Apache, http and different port
Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
powerbuilder
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
PowerBuilder 10 Get and Set System Language
Today I wanted to retrieve the selected system language from PowerBuilder 10. To accomplish that I had to do some search in the web. After a long period I fo...
pre-populated
Android pre-populated Database
Today I am going to show you how to create an android application which comes with a pre-populated database. The database file has to be stored in assets dir...
primary
PowerBuilder Datawindow Grid delete selected rows efficiently
Today I wanted to delete the selected rows of a datawindow grid in Powerbuilder. When I say delete I wanted just to remove them from the screen and not from ...
Debug HTTP request of Java SOAP JAX-WS web service client
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public
Extend SQLiteOpenHelper as a singleton class in Android
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Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
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Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
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rsyslog
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samba
Linux mount Windows shared directory via cifs and samba
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Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
sd
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share
Linux mount Windows shared directory via cifs and samba
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shell
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Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
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Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
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Ubuntu Debian Linux useful commands
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Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
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Use HAProxy and Docker to load balance requests to Solr and SolrCloud
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Today I wanted to export to a .tar.gz archive all unstracked (new) , modified and deleted files from a Git repository. After some searching, I found a StackO...
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Today I wanted to store some images to SD card and I wanted to find the available space:
spring
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Today I was working on a Java Spring MVC project which uses Maven. My editor was the Eclipse IDE, with the current version of the M2E plug-in. When I pulled ...
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Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
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Today I was trying to create and ODBC Data Source to a database using 32 bit database drivers. When I accessed ODBC Data Sources (32bit) from Control Panel, ...
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Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
Extend SQLiteOpenHelper as a singleton class in Android
Update: 2012-07-27
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ssl
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Java send smtp mail using Gmail
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statistic
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strata
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string
Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
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sublimetext
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symbolic
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sync
Install, configure and troubleshoot NTP servers in Debian Linux
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synchronisation
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MongoDB replica error RS102 too stale to catch up during full recovery
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syntax
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Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
Copy/Paste source code from Eclipse to Microsoft Word
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system language
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Today I wanted to retrieve the selected system language from PowerBuilder 10. To accomplish that I had to do some search in the web. After a long period I fo...
table
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tar
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telephony
Read SMS directly from Sqlite database in Android
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text
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thread
Read SMS directly from Sqlite database in Android
Today I wanted to extract the SMS content out of the android SMS application SQLite database using ADB.
time
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timezone
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I have installed XAMPP in my Windows machine and I want to alter the timezone in Apache HTTP server, PHP module and MySql in order to see proper dates in ser...
tls
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tools
Fix Vmware tools “ kernel header path is not valid “ error
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tortoise
Git merge conflicts using Tortoise Git merge in Windows
Today we wanted to use Tortoise Git Merge, a Windows Git utility which comes with Tortoise Git. It helps us do a 3 way merge and solve our conflicts easily. ...
truncate
Java String Util Class
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SQL Server Truncate All Table Data
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ubuntu
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Linux mount Windows shared directory via cifs and samba
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Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
Install Raspbian Wheezy Linux to Raspberry Pi using Linux
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umount
Linux mount Windows shared directory via cifs and samba
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Install Raspbian Wheezy Linux to Raspberry Pi using Linux
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unicode
Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
Import a large sql dump file to a MySQL database from command line
Today I had to import a very large SQL dump file (6 Gb) to a MySQL database using windows command line. If you are using linux it is the same. The process is...
Perl UTF-8 and Regular Expressions
Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
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Export Untracked, modified, moved and deleted files from a Git repository to archive
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Remove special and control characters from string using Python
Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
Perl UTF-8 and Regular Expressions
Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
utf8
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Today I had a database table which contained special and control characters (like DLE, DC1, ACK, DC3 etc.) in its records. After some searching I found a way...
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Today I wanted to explore Perl’s Unicode and regular expression capabilities, so I wrote down this simple script. It is quite amazing how simply Perl handles...
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Send email from VBScript using SMTP and Gmail
Today I wanted to send an email using SMTP from my gmail account. I searched the web and I found this and this and this which helped me a lot. So this is the...
vi
Vi set color scheme , line numbers and syntax highlighting
Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
video
Linux: Extract audio and video using ffmpeg
Today I had some mp4 video files and I wanted to extract the audio and video into separate files. So to do that you can do the following:
vim
Vi set color scheme , line numbers and syntax highlighting
Today I wanted to to set the Color Scheme in vi / vim in my Linux. The default configuration looks ugly:
vmware
Fix Vmware tools “ kernel header path is not valid “ error
UPDATE (2015-05-13): Confirming that the following approach works for Lubuntu versions 12.10, 14.04 and 14.10 and Linux Mint 15 and 17.
web
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
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Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
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Install Raspbian Wheezy Linux to Raspberry Pi using Linux
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Check Network connectivity and obtain Wifi MAC address in Android
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win32
PowerBuilder 10 Get and Set System Language
Today I wanted to retrieve the selected system language from PowerBuilder 10. To accomplish that I had to do some search in the web. After a long period I fo...
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Solr fix corrupted index using Lucene
A few days ago, a Solr server in our SolrCloud installation stopped unexpectedly. After examining solr.log file I spotted that it could not start again becau...
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Today I wanted to install Apache Solr index in Windows 7, Windows Server 2008R2 and Windows Server 2012 machines. So I achieved that , using the following st...
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Today I had to configure a MySQL database cluster and I faced the following error
Install Jboss 5.1.0.GA to Windows 7
Today I am going to show you how to install Jboss 5.1.0.GA on a Windows 7 machine.
word
Copy/Paste source code from Eclipse to Microsoft Word
Today I wanted to copy and paste a piece of code from Eclipse Indigo to Microsoft Word 2007 and keep the syntax highlighting. In some cases it worked but in ...
wordpress
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Today I had to hide a Wordpress 3.8.1 blog behind an Nginx reverse proxy configured to use only https. Nginx was behind an external firewall which forwarded ...
ws
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...
wscript
Send email from VBScript using SMTP and Gmail
Today I wanted to send an email using SMTP from my gmail account. I searched the web and I found this and this and this which helped me a lot. So this is the...
wsdl
Debug HTTP request of Java SOAP JAX-WS web service client
Today I wanted to debug in Java a JAX-WS SOAP web service client and see the exact message that is send as an HTTP request. So after searching, I found in th...
HTTP Basic Authentication in Java SOAP JAX-WS web service client
Today I had to create a Java client for a SOAP web service. So I opened Netbeans IDE and used the great tool which generates JAX-WS client code using the res...