id(1)

NAME
     id - print the uid and gid

SYNOPSIS
     id

EXAMPLES

     id                  # Print the uid and gid

DESCRIPTION

     Id prints the current uid and gid, both numerically and symbolically.  If
     the  effective  uid and gid are different from the real ones, all of them
     are printed.

     Under Minix-vmd the supplementary group IDs are also printed.

SEE ALSO
     getuid(2), getgid(2), getgroups(2).