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Ubuntu
The objective of this tutorial is to install the Sublime Text editor on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to install Sublime Text editor from the official sublime text repository
  • How to install Sublime Text editor from the Ubuntu snap repository
  • How to start Sublime Text editor

Details
Ubuntu
In this tutorial you will learn how to change a desktop theme on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to install Gnome Tweaks
  • How to change an Ubuntu theme

Details
Ubuntu
The objective of this tutorial is to learn how to identify internal and external IP address on Ubuntu 20.04 Focal Fossa Linux.

In this tutorial you will learn:
  • How to check local internal IP address
  • How to check external IP address

Details
Ubuntu
The objective is to install Ubuntu Studio as an alternative desktop environment to the Ubuntu 20.04 Focal Fossa Desktop/Server Linux.

In this tutorial you will learn:
  • How to install tasksel
  • How to install Ubuntu Studio Desktop environment
  • How to login to Ubuntu Studio Desktop environment

Details
Ubuntu
To following article will describe how to access root terminal and hence gain root access to the Ubuntu 20.04 Focal Fossa Desktop/Server system.

In this tutorial you will learn:
  • How to open terminal with root privileges
  • How to gain root access using existing terminal session

Details
Ubuntu
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

Details
Ubuntu
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

Details
Ubuntu
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

Details
Ubuntu
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:

Details
Ubuntu
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

Details
Ubuntu
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

Details
Ubuntu
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

Details
Ubuntu
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

Details
Ubuntu
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

Details
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

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