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.

In this article, you will learn how to view, backup, and restore the Linux command history on a Linux system, so stick with it till the end to learn everything.

In this article, you will learn about the vipw and vigr commands that let you safely edit the configuration files related to users or groups in your favorite text editor.

In Linux, the rename command is an amazing utility that allows you to rename single or multiple files at once, based on a set of rules or regular expressions you specify.

In this article, you will learn how to disable the directory content listing from the command line in Linux.

In this article, you will learn about the sleep command with its different suffixes and how to use it in shell scripts to pause the execution for a certain period of time.

In this article, you will learn how to use the time command to determine the execution time of a command or shell script taken by your system or server in Linux.

In this article, you will learn everything about the type command, including its different options (with practical examples).