How to use the whoami command in linux

The whoami command is used to display the username and group of the currently logged in user. Syntax: whoami. Output: Current username. Variants: whoami -u (username only), whoami -g (group only), whoami -p (PID only). Built-in command used to determine the identity of the user when running the command.

whoami command in Linux

What is the whoami command?

The whoami command is a command used to display the username and group of the currently logged in user in a Linux system.

How to use the whoami command?

The syntax of the whoami command is very simple:

whoami

Command output

After executing the whoami command, you will see the following output:

当前用户名

You can also get additional information using the following variations:

• whoami -u: Show only the current username.
• whoami -g: Only displays the current user's belonging groups.
• whoami -p: Only displays the process ID (PID) of the current user.

Example

The following example shows how to use the whoami command:

$ whoami alice

This means that the current logged in user name is alice.

Additional Information

• The whoami command is a built-in command, which means it does not require any external program.
• The whoami command is useful for determining who you are when running commands on your system.
• The whoami command can also be used as a simple way to check a user's identity in a script.

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