How to view the current user in a Linux system

Linux user management: how to check the current user name

In the Linux system, users are an important part of the system. Knowing how to view the current username is one of the fundamentals of using a Linux system. This article will introduce how to view the current user name in a Linux system and provide specific code examples.

1. Command to view the current user name

In the Linux system, you can use the whoami command to view the current user name. The whoami command will display the username of the currently logged in user.

Sample code:

whoami

2. Another way to view the current user name

In addition to using the whoami command, you can also use id command to view the current username. The id command will display the user ID of the current user and the ID of the group to which it belongs.

Sample code:

id -u -n

3. The third method to view the current user name

You can also view the current user through the environment variable $USER name. $USERSaves the username information of the current user.

Sample code:

echo $USER

4. Choose the appropriate command according to different situations

In actual applications, according to different needs and situations, you can choose different commands to view Current username. If you only need to simply view the current user name, it may be more convenient to use whoami; if you need to view more detailed user information, you can choose the id command; if you need to obtain it in a script The current user name, you can use the $USER environment variable.

5. Summary

This article introduces three methods of how to view the current user name in Linux systems, and provides specific code examples. Knowing how to view the current username is one of the basics of using the Linux system. I hope this article will be helpful to beginners.

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