How to use the who command: 2-Minute Linux Tips

The video tutorial explains the 'Who' command in Linux, detailing its primary function of listing logged-in users and additional options like checking the last boot time and current run state. It also covers how to count logged-in users and create aliases for the command to simplify usage.

What does the 'who' command primarily display?

• The system's current run level

• The last boot time of the system

• The system's IP address

• A list of logged-in users

What information does 'who -b' provide?

• The IP address of logged-in users

• The last boot time of the system

• The system's current run level

• The number of users currently logged in

What does run level 5 indicate?

• Graphical user interface mode

• System maintenance mode

• Multi-user mode with networking

• Single-user mode

How can you get a simple count of logged-in users?

• Using 'who -b'

• Using 'who -r'

• Using 'who -q'

• Using 'who -a'

What is the benefit of creating aliases for commands?

• To display the system's IP address

• To change the system's run level

• To make commands more understandable or shorter

• To increase the number of logged-in users