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GNU Core-utils

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20. User information

This section describes commands that print user-related information: logins, groups, and so forth.

20.1 id: Print real and effective uid and gid  Print real and effective uid and gid.
20.2 logname: Print current login name  Print current login name.
20.3 whoami: Print effective user id  Print effective user id.
20.4 groups: Print group names a user is in  Print group names a user is in.
20.5 users: Print login names of users currently logged in  Print login names of users currently logged in.
20.6 who: Print who is currently logged in  Print who is currently logged in.


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