

#include <sys/types.h> #include <unistd.h> gid_t getegid(void);
getegid determines the effective group ID of the calling process.
getegid can fail. In this case, getegid issues an MVS user ABEND 1230
to indicate the error.
getegid:
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
.
.
.
printf("%d is my group ID.\n", (int) getegid());
.
.
.
geteuid, getgid, setegid, setgid
Copyright (c) 1998 SAS Institute Inc. Cary, NC, USA. All rights reserved.