The members command in Linux is used to display a list of the members of a specified group.
To use the members command, you will need to provide the name of the group as an argument.
For example, to display the members of the admin group, you can use the following command:
$ members admin
This will output a list of the members of the admin group, one member per line.
You can also use the groups command to display the groups that a specified user is a member of.
For example, to display the groups that the user john is a member of, you can use the following command:
$ groups john
This will output a list of the groups that the user john is a member of, separated by spaces.
You can also use the id command to display information about a user, including the user's user ID (UID) and group ID (GID), and the groups that the user is a member of.
For example, to display information about the user john, you can use the following command:
$ id john
This will output information about the user john, including the user's UID, GID, and the groups that the user is a member of.
Note that you will need the appropriate permissions to use the members, groups, and id commands. If you do not have the necessary permissions, you may receive an error message.