In this article, you'll learn about the proc file system (short for "procfs", referring to the "/proc" directory) and how it's useful to check the running processes related information on Linux.

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.

This article will teach you what systemd is and why it replaced SysVinit; what systemd unit files are; how to list all and specific unit files; and how to view the content of a unit configuration file.

Dive into the contentious world of 'init' vs. 'systemd' on Linux, uncovering their features, the heated debate surrounding them, and the choices they offer, all while exploring their impact on the Linux community.

This article will show you three methods for determining whether your Linux system is using systemd or another init system.

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).

In this article, you will learn how to broadcast a message to all logged-in users on your system either locally or via SSH using the wall command.

In this article, you will learn what the difference is between variables and parameters, what special parameters are, and a list of predefined special parameters in Bash.

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).

This article will teach you about the different types of files on Linux, what the root directory is, what the /dev directory is for, and what the /dev/sda device files are.

In this article, you will learn what the hash list is, the differences between it and the history list, and how to use its command-line tool to manage records in the hash list in Linux.

In this article, you will learn how to use the ping command with its available options, including the explanation of output and ping flooding.

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 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 five ways to follow symbolic (or soft) links to find the original file to which the symbolic link points.

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 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 check all the logged-in users in your system using the w command, including its different options (with practical examples).