GETGID(2)                            BSD                             GETGID(2)



NAME
     getgid, getegid - get group identity

SYNOPSIS
     #include <sys/types.h>

     gid = getgid()
     gid_t gid;

     egid = getegid()
     gid_t egid;

DESCRIPTION
     getgid returns the real group ID of the current process, getegid the
     effective group ID.

     The real group ID is specified at log-in time.

     The effective group ID is more transient and determines additional access
     permission during execution of a "set-group-ID" process, and it is for
     such processes that getgid is most useful.

SEE ALSO
     intro(2), getoid(2), getuid(2), setregid(2), setreoid(2), setreuid(2),
     setoid(3), setuid(3)