who Linux Commands – Overview with Examples and FAQs

Introduction

The Linux command line is a powerful tool that can be used to perform a variety of tasks. It is a text-based interface that allows users to interact with the operating system and execute commands. The Linux command line is a powerful tool that can be used to perform a variety of tasks, such as creating and managing files, running programs, and managing system resources. It is a powerful tool that can be used to automate tasks, create scripts, and perform system administration. With the Linux command line, users can quickly and easily perform a variety of tasks.

Examples

The HTML who Linux command is used to display information about users who are currently logged into the system. It displays the user’s login name, the time they logged in, and the device they are logged in from.

Syntax:

who [options]

Options:
-a Display all information about users who are currently logged in
-b Display the time of the last system boot
-d Display dead processes
-H Display a help message
-i Display idle time
-m Display only the user’s name and the device they are logged in from
-q Display the number of users currently logged in
-r Display the system’s run level
-s Display a short listing of information
-u Display the user’s login name, terminal line, and the time they logged in

Example:

who -a

This command will display all information about users who are currently logged in, including their login name, the time they logged in, and the device they are logged in from.


Linux Command

Linux is an open-source operating system that is used by millions of people around the world. It is a powerful and versatile operating system that can be used for a variety of tasks. One of the most important aspects of Linux is the command line, which allows users to interact with the system and perform various tasks. In this article, we will discuss some of the most commonly used Linux commands.

ls

The ls command is used to list the contents of a directory. It can be used to list files, directories, and other information about the contents of a directory. The command can also be used to list the contents of a directory in a specific format, such as long listing format or short listing format.

cd

The cd command is used to change the current working directory. This command is used to navigate to a different directory on the system. The command can also be used to move up and down the directory tree.

mkdir

The mkdir command is used to create a new directory. This command is used to create a directory with a specific name and path. The command can also be used to create multiple directories at once.

rm

The rm command is used to remove files and directories. This command is used to delete files and directories from the system. The command can also be used to delete multiple files and directories at once.

chmod

The chmod command is used to change the permissions of a file or directory. This command is used to set the permissions of a file or directory so that it can be accessed by certain users or groups. The command can also be used to set the permissions of multiple files and directories at once.

sudo

The sudo command is used to execute a command as the root user. This command is used to execute a command with root privileges. The command can also be used to execute multiple commands as the root user.

man

The man command is used to view the manual page for a command. This command is used to view the manual page for a command, which contains information about the command and its usage. The command can also be used to view the manual page for multiple commands at once.

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