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Showing content from https://www.geeksforgeeks.org/linux-unix/chfn-command-in-linux-with-examples/ below:

chfn command in Linux with examples

Last Updated : 23 Sep, 2024

'chfn' command in Linux allows you to change a user's name and other details easily. 'chfn' stands for Change finger. Basically, it is used to modify your finger information on Linux system. This information is generally stored in the file '/etc/passwd' that includes user's original name, work phone number etc. The 'chfn' command is particularly useful for updating user details on multi-user systems, ensuring that contact information is accurate and up-to-date.

Here, we’ll explore the syntax, options, and examples of using the chfn command to modify user details

Syntax

chfn [option] [login]

where,

[option]: The specific attribute you want to change (e.g., full name, phone number, etc.).
[login]: The username of the account you want to modify.

If no options are specified, the command will prompt the user to change various attributes interactively.

Basic 'chfn' command Example

In this example we used default "chfn" command without any option. In this system asks from the user itself to change the values of some basic attributes.

Key Options for the 'chfn' Command 1. -f full_name:

Let you change the full name on the account.

sudo chfn -f Shivang123 shivang

2. -w work_ph:

Let you change the work phone number on the account.

sudo chfn -w 124567890 shivang

3. -r room_no:

Let you change the room number on the account.

sudo chfn -r 9999 shivang

4. -h home_ph:

Let you change the home phone number on the account.

sudo chfn -h 123456 shivang

5. -o other:

Let you change any other detail on the account.

sudo chfn -o "Manager, IT Department" shivang

Conclusion

The chfn command is a simple yet powerful tool for modifying user finger information on Linux systems. Whether you're updating your own details or managing a multi-user system, chfn makes it easy to keep user information accurate and up-to-date. By understanding the different options and how to use them effectively, you can ensure that the user details stored in '/etc/passwd' are always current, making the system more efficient and user-friendly.

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