gid_t              48 include/sys/stat.h 	gid_t	  st_gid;		/* group ID of the file's group */
gid_t              50 usr/include/unistd.h int	 chown(const char *, uid_t, gid_t);
gid_t              66 usr/include/unistd.h gid_t	 getegid(void);
gid_t              68 usr/include/unistd.h gid_t	 getgid(void);
gid_t              83 usr/include/unistd.h int	 setgid(gid_t);
gid_t             136 usr/include/unistd.h int	 setegid(gid_t);
gid_t              37 usr/lib/posix/file/chown.c chown(const char *path, uid_t owner, gid_t group)
gid_t              33 usr/lib/posix/process/getegid.c gid_t
gid_t              33 usr/lib/posix/process/getgid.c gid_t
gid_t              34 usr/lib/posix/process/setegid.c setegid(gid_t egid)
gid_t              34 usr/lib/posix/process/setgid.c setgid(gid_t gid)