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.


How to change DNS settings from command line

  • 18 June 2019
  • ADM

The command line tool used to change the DNS settings is netsh which allows you to configure just about any aspect of your network connections in Windows. In order to use the tool the command line needs to be started as Administrator.


How to change computer's IP address from command line

  • 17 June 2019
  • ADM

The command line tool used to change the IP address is netsh which allows you to configure just about any aspect of your network connections in Windows. In order to use the tool the command line needs to be started as Administrator


How to rename a git branch

  • 13 May 2020
  • ADM

How to rename a git branch in simple steps: rename branch, delete old remote, push the new branch and reset the upstream branch.


How to remove a remote from git

  • 14 April 2020
  • ADM

To remove a remote you can use the command git remote rm in the terminal, from the root folder of your repository.


Java Custom Annotations Example

  • 26 July 2018
  • ADM

How to create Java Custom Annotation. A simple example of creating Annotations in Java and usage by calling the Reflection API.