How to Find User ID on Raspberry Pi

User ID is a numeric ID used specifically for the users on the system. It is a representation of users in the Linux Kernel and it helps identify the resources users are using. You can also use the specific UserID of a user to kill a specific process within the system. Each user is assigned a different User ID on the system and if you are interested in finding the UserID information on the Raspberry Pi system, follow the below guide to see different commands used for this purpose.

How To Find User ID on Raspberry Pi?

We will go through different commands to find the User ID on Raspberry Pi:

lslogins Command
id Command
getent Command
grep Command

The syntax and usage of each of these commands are discussed one by one.

1: lslogins Command

The lslogins command can be used with -u flag to display the User ID of different user accounts on Raspberry Pi system.

$ lslogins -u

2: id Command

You can also use the id command to check for different User ID and group ID information on the system:

$ id

You can also find the User ID and group ID information of a specific user through the following command:

$ id <user-name>

3: getent Command

The getent command is another useful command to fetch entries from the databases in the systems and retrieve the User ID information through it.

Syntax

$ getent passwd <user-name>

Example

$ getent passwd pi

The output will display the User ID of the user’s name mentioned in the command:

4: grep Command

The grep is a very useful command line utility that searches the string from a file and displays it. You can also use this command to display the User ID and related information that fetch the details of user from /etc/passwd file:

Syntax

$ grep <username> /etc/passwd

Example

$ grep pi /etc/passwd

Conclusion

User ID information on Raspberry Pi is useful since it allows you to monitor the process used by the specific user. There are different commands you can use for finding the User ID on the Raspberry Pi system, which are lslogins, id, getnet and grep. You can choose any command and run it on the terminal to retrieve the User ID of a specific user on the Raspberry Pi system.

How to Find User ID on Raspberry Pi