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.

In this article, you will learn how to follow the deeply nested soft link (or symbolic link) inside the tree using the readlink command.

In this article, you will learn how to change referenced file or directory permissions using the chmod command in Linux (with practical examples).

The compgen command is a very handy tool available in major Linux distributions that can help you find your system aliases, commands, directories, groups, jobs, users, etc.

The chage command is identical to the passwd command used to change user account and password expiration information.

In this article, you learn how to use the stat command to check the properties of a referenced file, including file system related information.

AWK is a domain-specific programming language that can be used as a Linux command-line tool or within a shell script.

The chroot jail is a process of creating a sandbox environment for a user or script with restricted permissions assigned by the jail creator that can come into use for various reasons, followed by