Christos Manios

Developer life is a NullPointerException

Categories

Database

Postgres

SQL

Bash

Linux

Mint

Ubuntu

Hibernate

Java

Oracle

Spring

Spring Boot

Kubernetes

Databases

MS SQL

MS SQL Server

Go

Golang

MongoDB

JSON

Camera

Lenovo

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Beats

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Source Control

Lucene

Windows

Nginx

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Python

Android

SQLite

Virtualisation

Vmware

Raspbian

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Raspberry Pi

PHP

Networking

Smtp

Sql Server

PowerBuilder

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JBoss

Example Category

2025

PostgreSQL perform queries in JSON array sub-documents

2024

Linux Mint Mate configure screensaver and display sleep via command line

2023

ORA-17026: Numeric overflow when calling Oracle SQL function using Hibernate 6

Kubernetes tail Spring Boot json logs in plain text Log4j (Logback) format using Stern

2022

MS SQL Server Docker container restore database from .bak file created in Windows to a New Location

SQL query to check if a date range is between two dates in Oracle database

2021

Go Mongodb Error Cannot create field X in element {Y: null}

Convert from/to JSON decimal fields in Go (golang) structs

PostgreSQL case and accent insentitive SQL queries

2020

Lenovo Thinkpad T470p camera problem switching on and off in Windows 10

Convert Markdown to PDF using Docker, Pandoc and Asciidoctor

2019

Force Maven to execute offline with local repository dependencies in a machine without Internet connection

MongoDB query to aggregate documents by a specific property

2018

Solved: HP 630 notebook overheating problem

Resolve "Could not find __debug_frame section in binary" when trying to Debug Metricbeat with Delve and Go 1.10.4

Rsyslog - Parse Json and enrich IP with Geolocation using Maxmind GeoLite2 City and ISP

Logstash - Enrich IP with Geolocation using Maxmind GeoLite2 City and ISP

Creating a Beat based on Metricbeat resolving Init and create metricset failures

Git merge conflicts using Tortoise Git merge in Windows

Debug HTTP request of Java SOAP JAX-WS web service client

HTTP Basic Authentication in Java SOAP JAX-WS web service client

2017

Install, configure and troubleshoot NTP servers in Debian Linux

MongoDB replica error RS102 too stale to catch up during full recovery

Use HAProxy and Docker to load balance requests to Solr and SolrCloud

SublimeText 3 Fix greek (and other languages) accented chars input

Configure Eclipse in order to build MapStruct in Java projects

2016

Let's Encrypt SSL certificate without root or sudo privileges

Featured image of post Let's Encrypt SSL certificate without root or sudo privileges

2015

Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0

Featured image of post Migrate a Gitlab Docker container from version 8.0.4 to 8.2.0

2014

JSON remove new lines via Linux and use it as string variable and as param in cURL POST request

Solr fix corrupted index using Lucene

Linux: Extract audio and video using ffmpeg

Nginx https reverse proxy to Wordpress with Apache, http and different port

Export Untracked, modified, moved and deleted files from a Git repository to archive

Install Apache Solr as Windows Service using NSSM

2013

Remove special and control characters from string using Python

Read SMS directly from Sqlite database in Android

Linux get hard disk statistics using Python

Linux mount Windows shared directory via cifs and samba

Fix Vmware tools " kernel header path is not valid " error

Vi set color scheme , line numbers and syntax highlighting

MySQL connection ERROR 1129

Import a large sql dump file to a MySQL database from command line

Install Raspbian Wheezy Linux to Raspberry Pi using Linux

Change timezone to Apache server , PHP and MySql in XAMPP

Java send smtp mail using Gmail

2012

Java String Util Class

Windows 7 64bit ODBC Data sources

Send email from VBScript using SMTP and Gmail

PowerBuilder Datawindow Grid delete selected rows efficiently

Perl UTF-8 and Regular Expressions

Java Calculate Orthodox Easter Date

Ubuntu Debian Linux useful commands

Java get file size and download using HTTP

PowerBuilder 10 Get and Set System Language

SQL Server Select Table information

SQL Server Truncate All Table Data

Extend SQLiteOpenHelper as a singleton class in Android

Launch Logcat programmatically in Android

Android pre-populated Database

Bluetooth adapter device name and MAC address in Android

Install Jboss 5.1.0.GA to Windows 7

Android Custom Dialogs Part 1: Set value

Check Network connectivity and obtain Wifi MAC address in Android

Android MD5 password encryption

Copy/Paste source code from Eclipse to Microsoft Word

Android External Storage Free Space

Object ArrayList Sort

Android get SQLite Library Version

Zip and UnZip in Java

2011

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