Overview
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There are several ways to check which users belong to a specific group on a Linux system. Here, we explain how to list users belonging to specific groups (in this case, “group1” and “group2”) using the command line.
Method 1: Check the /etc/group File
On Linux, the /etc/group file stores information about all groups on the system and the users belonging to them. By checking this file, you can identify users in a specific group.
Command:
These commands search for information about the group1 and group2 groups from the /etc/group file and output the results. The output looks like this:
Here, user1 and user2 are members of the group1 group, and user3 and user4 are members of the group2 group.
Method 2: Use the getent Command
You can also use the getent command to look up users belonging to a group. This command retrieves information directly from the /etc/group file.
Command:
The output is in the same format as when using grep on /etc/group.
Method 3: Use the members Command
The members command is used to list the names of all users belonging to a specific group. However, this command is not installed by default on all Linux distributions, so installation may be required.
Command:
Using these methods, you can check the users belonging to the group1 and group2 groups. Which method to choose depends on your system and the programs installed.