id - print real and effective user and group IDs


       id [OPTION]... [USERNAME]


       Print user and group information for the specified USERNAME, or (when USERNAME omitted) for the current user.

       -a     ignore, for compatibility with other versions

       -Z, --context
              print only the security context of the current user

       -g, --group
              print only the effective group ID

       -G, --groups
              print all group IDs

       -n, --name
              print a name instead of a number, for -ugG

       -r, --real
              print the real ID instead of the effective ID, with -ugG

       -u, --user
              print only the effective user ID

       --help display this help and exit

              output version information and exit

       Without any OPTION, print some useful set of identified information.


       Written by Arnold Robbins and David MacKenzie.

reporting bugs

       Report id bugs to
       GNU coreutils home page: <>
       General help using GNU software: <>
       Report id translation bugs to <>

       Copyright © 2013 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

see also

       The full documentation for id is maintained as a Texinfo manual.  If the info and id programs are properly installed at your site, the command

              info coreutils 'id invocation'

       should give you access to the complete manual.