The whoami command in Linux explained
The whoami command prints the user name you are logged in as. It is one of the most useful commands for anyone using a live USB drive or a fresh Linux install.
Syntax
whoami
Examples
whoami: prints your user name
Tip
It is useful in scripts and when checking sudo.
Keep learning
New to the terminal? Start with Linux terminal basics. You can try every command safely from a live session: see how to try Linux without installing it. Run man whoami in a terminal for the full manual.
Frequently asked questions
How do I see every option for whoami?
Run man whoami for the full manual, or try whoami --help for a short summary.
Do I need sudo to run whoami?
Not for your own files. You only need sudo when the command changes something owned by the system or another user.
Is it safe to practise whoami on a live USB drive?
Mostly yes, because a live session starts fresh each time. Be careful with commands that write to your internal disk, such as rm on a mounted drive or dd.