In this tutorial you will learn how to configure sudo without the password. Meaning that the sudo command will not prompt you to enter password hence rendering your sudo command completely passwordless.
WARNING
Configuring your sudo command with no password may lead to a security breach, hence leaving your system and data compromised. You are adviced not to proceed with sudo passwordless configuration!


In this tutorial you will learn:
  • How to disable password for the sudo command
  • How to disable sudo password for a specific administrative commands

In this tutorial you will learn how to create a bootable Ubuntu 20.04 USB startup disk. Two methods of bootable Ubuntu 20.04 USB startup disk creation will be shown. To be specific we will be creating a bootable Ubuntu 20.04 USB using any existing Ubuntu Desktop or by using command line on any GNU/Linux distribution.

In this tutorial you will learn:

In this tutorial you will learn how to install all commonly used media codecs and fonts for Ubuntu 20.04 LTS Focal Fossa. By default when you attempt to play multimedia file using the default media player the error message appears stating that the video or audio player is unable to play file due the the missing decoder.

In this tutorial you will learn:
  • How to install video and audio codes
  • How to check for installed decoders, encoders and codes

Depending on your Ubuntu 20.04 Server/Desktop installation your system might not come with the ping command pre-installed. This is especially the case for docker containers. Any attempt to ping a remote system will result in the following error:
ping linuxconfig.org
bash: ping: command not found
In this tutorial you will learn:
  • How to install ping command on Ubuntu

The Ubuntu 20.04 GPG error: The following signatures couldn't be verified is a most common error when attempting to include third party package repositories to the apt package manager.

The GPG error should rather be treated as a warning against potential package installation from unknown sources. Therefore, the GPG error message prompts the user to verify and manually import the third party signature belonging to relevant package developer.

In this tutorial you will learn:
  • How to import public key signature

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