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Basics

Check if Linux group exists using bash shell

In this example, I will use the getent command to check if a Linux group exists. if getent group "$groupname"…

Check if Linux user exists using Bash script

Here I will show you how to check if a Linux user exists (or does not exist) in a POSIX-compatible…

How to clear Bash history on Linux

The bash history is a log file that contains all commands that a user executed on the Linux BASH shell.…

12 Best Practices for Writing Bash Scripts

Bash shell refers to Bourne Again Shell which can be found as the default shell in most of the Linux…

What is my IP – on Ubuntu Linux

In this guide, I will show you how to find your IP address (private IP address and public IP address)…

3 Ways to Limit the Number of Responses in Google Forms

Google Forms are very commonly used for surveys and questionnaires nowadays. Besides conducting such studies, they are also used in…

How to Switch Between Users in Linux

Linux is a multi-user operating system. Whether it's using the superuser account to execute administrative tasks or modifying the current…

Reset root password (Ubuntu Linux) without CD

Resetting your system's root password may be a necessary step if you have forgotten it or have bought a used…

Change grub default boot option on Linux Ubuntu/Mint

Grub's default boot option is stored within a config file found on the partition where your Master Boot Record is…

How to Disable quota for a Linux User or Group on the Shell

Linux user quotas can be edited with the commands edquota or setquota on the shell. While edquota opens the quota…

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