Nov 242020

ADM

How to run HyperV Ubuntu VM in full screen

  • 24 November 2020
  • ADM

When I installed Ubuntu Desktop in HyperV, the VM was running with a 1152x864 screen resolution and I could not get the machine to run full screen. The max resolution that hyperv_fb is supporting is 1920x1080.

May 112020

ADM

Install and use firewalld on Ubuntu

  • 11 May 2020
  • ADM

Firewalld is one of the Linux firewall management tool and it is available on the in the Ubuntu's default repositories, therefore it is available to be installed from these repositories using the apt packaging system.

Apr 152020

ADM

Base64 Decode in Golang

  • 15 April 2020
  • ADM

Golang programing language provides built-in suport for base64 decoding. The base64 functions are available into the encoding/base64 package. It provides implementations for both Standard, with or without padding and Filename safe Base64 decoding variant.

Apr 142020

ADM

Maps in Golang

  • 14 April 2020
  • ADM

Golang maps implements a hash table. Hash tables are one of the most used data structure. A hash table is an unordered collection of key-value pairs, where each key is unique.

Apr 072020

ADM

How to show open database connections in MySQL

  • 07 April 2020
  • ADM

How to show open database connections in MySQL using show status and show processlist command.

Mar 172020

ADM

How to check the JDK version of a class file

  • 17 March 2020
  • ADM

When running a Java application it is mandatory that the JRE version to match or to be higher that the JDK version used to compile the application.

You will get the "Unsupported major.minor version 52.0" error when trying to run an Java 1.8 application using a lower version of Java.