The groups command is used to list all the groups to which the specified user belongs. This will make it easier for you to manage users and groups in your system.

The which command locates the executable command or file location in the user’s environmental path. It will give you the complete path an executable command or file is pointing towards in your file system.

The find command is an advanced tool for searching files or directories rigorously in your file system, taking a little longer time than its alternative tools like the locate command.

The environment variables are a set of key-value pairs that define the current environment and can affect the behavior of the ongoing programs that are executed in the environment.

The source is a built-in command-line tool that reads and executes the commands from the specified file as its argument in the current shell.

To avoid jumping into the directory to execute your local program or script, you can add their paths to the $PATH variable to access them from anywhere.

The WC command is used to count various parameters from the specified file, like the number of lines, word counts, byte counts, character counts, and many more.

In this article, you will learn to count the number of string occurrences in a text file using the grep, wc, and tr commands, including the VIM text editor.

The PS is a native command-line utility for UNIX-based systems that monitors the currently running processes in your system.

The export command is used to create environment variables or update variable values in the current shell session by newly forked child processes without starting a new shell session.

The set command is a built-in Linux command that can display or modify the value of shell attributes and positional parameters inside the current shell environment.

The unset command is a built-in Linux command used for flushing the value of variables or functions during program execution.

In Bash and also for other implementations of the shell, like zsh and fish, you can use the HereDoc to redirect a multi-line or block of lines from the script as an input to interactive commands.

The read command is a built-in Linux utility that allows shell script writers to take single line input from the keyboard or from the file descriptor and store it in a variable.

In this article, you will learn different ways to list all the available shells in your Linux system, including shells associated with specific users, your own default login shell, and many more.

In this article, you will learn three ways to change a user's login shell in a Linux system using the usermod, chsh, and vim or nano commands.

The touch command is used to create new files, change the file access time and file modification time, replicate another file's timestamp, and much more.

In this article, you will learn to read large files effectively using either the more or less command and find their huge difference.

The watch command is used to monitor the changes in the command output over a certain interval of time that can also be manually adjusted.

In this article, you will learn how to list the most and least executed commands in your Linux system to find your favorite tool.

In this article, you will learn how to add date and time to the history record and how to list previously executed commands based on their date and time in Linux.