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FOSSGuides

Practical Linux and Free Open Source Software Guides

  • About Us
    • Terms of Use
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    • Copyright Policy
    • Contact Us
  • How-Tos
  • Tips and Tricks
  • CLI Tools/Utilities
  • GUI Apps
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    • Ubuntu
    • Linux Mint
  • DevOps
    • Docker
    • Kubernetes
  • Programming
  • Security
How-To-Find-Process-or-Service-Listening-on-a-Port-in-Linux

How to Find Process or Service Running on a Port in Linux

Overview: This guide shows how to find out the process or service running on a particular port on a Linux...

How-To-Setup-a-Kubernetes-Cluster-Using-Debian-or-Ubuntu

How To Setup a Kubernetes Cluster Using Debian or Ubuntu

Overview: This guide shows how to create a three-node, single-control-plane Kubernetes cluster that conforms to best practices in Debian or...

Create-SSH-Keys-for-Passwordless-SSH-Authentication

How to Create SSH Keys and Setup SSH Passwordless Authentication in Linux

Overview: This guide shows how to create SSH (Secure Shell) private and public keys and use them to connect to...

Install-pgAdmin-4-in-Linux-Mint

How To Install pgAdmin 4 in Linux Mint

Overview: This guide shows how to install the latest version of pgAdmin 4 in Linux Mint, from the official APT...

Prune-Unused-Docker-Objects

How to Remove Unused Docker Objects from a Linux System

Overview: This post demonstrates how to prune or delete unused Docker objects such as images, containers, volumes, and networks, and...

Causes-and-Solutions-to-Guru-Meditation-Error-in-VirtualBox

Cause(s) of “Guru Meditation” Error in Virtual Box and How to Fix It

Overview: This guide explains the possible cause(s) of the “Guru Meditation” error in Virtual Box and how to resolve it....

How-to-Install-and-Use-WP-CLI-to-Manage-WordPress-Installations-in-Linux

How to Install and Use WP-CLI to Manage WordPress Installation(s)

Overview: This guide shows how to install and use WP-CLI for managing your WordPress installations on a Linux system. What...

How-To-Install-Software-Packages-in-Ubuntu-and-Linux-Mint

How To Install Software Packages in Ubuntu and Linux Mint

Overview: This guide describes multiple common methods for installing software packages in the Ubuntu Linux operating system. Are you new...

How-To-Fix-username-not-in-sudoers-file-error-in-Ubuntu

Fix “username is not in the sudoers file. ….” Error in Ubuntu

Overview: This guide shows how to fix the “username is not in the sudoers file. This incident will be reported”...

Install-and-Use-Glances-Monitoring-Tool-in-Linux

Glances – the Best Modern Monitoring Tool for Linux

Overview: This guide shows how to install and use Glances to collect and monitor operating system statistics in a Linux...

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Desktop Guides

  • How To Install Opera Web Browser in Debian, Ubuntu, and Linux Mint

  • How to Fix the RETBleed Attack Warning in VirtualBox

  • Cause(s) of “Guru Meditation” Error in Virtual Box and How to Fix It

  • How to Test Internet Speed in Linux

  • These are the Best Linux Operating Systems for Beginners no Doubt

Server Guides

  • Best Open-Source Load Balancers for Linux Servers

  • Why is Linux Popularly Used as a Server Operating System?

  • How To Add or Remove a User From a Group in Linux

  • When To Run HAProxy in HTTP or TCP Modes

  • How to Connect to a Remote Server Using SSH

For Beginners

  • How to Remove Unused Docker Objects from a Linux System

  • Common Linux Terminologies for Beginners

  • How To Build and Push a Docker Image to Docker Hub

  • Tips and Tricks for Navigating the Linux File-system via the Command Line

  • How To Install Opera Web Browser in Debian, Ubuntu, and Linux Mint

Most Used CLI Tools

  • Terminator – The Best Terminal Application for Linux

  • How to Connect to a Remote Server Using SSH

  • How to Create a New User in Linux

  • How To Setup snapd in Linux for Installing Snaps

  • How To Check Disk Space Usage in Linux

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