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 install the nmap port scanner on Ubuntu 20.04 Focal Fossa Linux and how to perform basic port scanning.

In this tutorial you will learn:
  • How to install namp
  • How to perform basic local and remote port scans
  • How to scan TCP and UDP port

The objective of this tutorial is to set a root password on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to set root password

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

To following article will provide the reader with multiple methods of accessing the terminal window on Ubuntu 20.04 Focal Fossa desktop.

In this tutorial you will learn:
  • How to open terminal window using shortcuts
  • Other ways how to quickly open the terminal window

The objective of this tutorial is to activate the UFW firewall on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to check UFW status
  • How to activate UFW

The objective of this tutorial is to provide the reader with a troubleshooting guidance on how to resolve the error message Unable to locate package on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to update package repository index
  • How to check Ubuntu version
  • How to use Ubuntu package search
  • How to add repository

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

In this tutorial you will learn how to install the curl command on Ubuntu 20.04 Focal Fossa.

In this tutorial you will learn:
  • How to install curl command
  • How to troubleshoot Command 'curl' not found error

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

In this tutorial you will learn how to reset your GNOME Desktop Settings to Factory Default on Ubuntu 20.04 Focal Fossa. The reset will put your desktop appearance and all settings, shortcuts, wallpapers and etc. to the factory default.

In this tutorial you will learn:
  • How to Reset GNOME Desktop Settings to Factory Default

In this tutorial you will learn how to install the make command on Ubuntu 20.04 Focal Fossa.

In this tutorial you will learn:
  • How to install make command
  • How to troubleshoot the Command 'make' not found error

In this tutorial you will learn how to permanently add a static route on Ubuntu 20.04 Focal Fossa Linux using netplan.

In this tutorial you will learn:
  • How to add permanent static route
  • How to apply new netplan configuration
  • How to check static routes from command line

In this tutorial you will learn how to install AnyDesk application on Ubuntu 20.04 Focal Fossa.

In this tutorial you will learn:
  • How to installed AnyDesk
  • How to share desktop remotely
  • How to to connect to AnyDesk remote desktop

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