One Day One GNU/Linux Command
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id - Print real & effective UIDs and GIDs
Summary :
It prints the user's info like user id, group id, user name, etc.,
Example:
$ id -- Print UID, GID, Groups.
$ id -r -- Print only the real user ID.
$ id -u -- print only the effective user ID
$ id -nu -- Print only user name.
$ id -g -- print only the effective group ID.
$ id -ng -- Print only group name.
$ id -G -- Print all group IDs
$ id -nG -- Print all groups name.
$ id user1 -- Print info abt user1.
NOTE:-
Real UID is the UID of the user, who created. Effective UID is used to
evaluate privileges of the process to perform a particular action.
Read : man id
HTH :)
--
Bharathi S
