id

Usage: id [OPTION]... [USERNAME]

Print information for USERNAME or the current user.

Options:

			-g	Print only the group ID
			-u	Print only the user ID
			-n      print a name instead of a number (with for -ug)
			-r	Print the real user ID instead of the effective ID (with -ug)
		

Example:

			$ id
			uid=1000(andersen) gid=1000(andersen)