Learn how to list and get information about all the block devices in your system using the lsblk command and its options, with practical examples.

The chsh is a UNIX/Linux command-line tool to change the existing or specified user login shell into a new login shell.

The mkdir command is used to create single or multiple directories while also setting a permission when they are created in a Linux system.

The bash (Bourne-Again SHell) is a sh-compatible command-line interpreter that reads from standard input or from a file and gives you the resulting output.

The usermod command is a user management tool to modify user account information like username, user ID, default shell, home directory, and many more.

A root or normal user can easily switch to another user account using the su command if they know their current or another user's password.

In this article, you will learn how to use the uname command and its options to print kernel, hardware, and operating system information.

In this article, you will learn how to use the pstree command and how to use the different available options with it (with practical examples).

The file command on Linux is used to determine the MIME encoding (e.g. ‘image/jpeg; charset=binary’) or file type (e.g. ‘ASCII text’) for the target file.

In this article, you learn how to print the absolute path of a symbolic link, file, or directory using the realpath command on Linux.

In this article, you will learn the usage of the whoami command, how to use it in shell scripts, and its alternative commands.

In this article, you will learn about the short description of the init process, the runlevels of init, and the init command in a Linux system.

Bash, an acronym for “Bourne-Again SHell“, is a superset of the shell (or sh) program written by Brian Fox for the GNU Project as a replacement for the traditional Bourne Shell (or sh).

The eval command is used to execute specified arguments as a single command in the current command-line processing and return its result.

The getent command is used to fetch entries from the administrative text files like passwd, group, hosts, services, etc., also known as databases.

GNU nano is a built-in text editor for major Linux distributions, providing similar options to edit and modify files as its competitors VIM.

The passwd command is used to modify the user’s password and its properties, like deleting the password, expiring the password, deactivating the account, and many more.

The printenv command is an alternative to the env command used to fetch the value of a specified variable name (key) used as an argument.

Linux administrators are allowed to create "normal user accounts" with a range from 1000 to 60000 uids, where uid 0 is reserved for "root users" and "system users" are allowed uids from 1 to 999.

The gpasswd command is used to administer “/etc/group” and “/etc/gshadow” file by allowing you to manage group members in your Linux system.

In this article, you will learn the difference between the logname and whoami commands, the usage of the logname command, and how to use it in shell scripts.