grp.h -- Header File

Declare group structure
#include <grp.h>

The header  file grp.h declares  the structure group, which  is composed as
follows:

struct group (
     char *gr_name; /* group name */
     char *gr_passwd;/* group password */
     int  gr_gid;   /* numeric group id */
     char **gr_mem; /* group members */
};

This  structure holds  information about  the group to  which a  given user
belongs, as  defined in the  file /etc/group. It  is used by  the functions
endgrent(), getgrent(), getgrgid(), getgrnam(), and setgrent().

See Also

header files
POSIX Standard, §9.2.1

© 2012 by Stephen A. Ness