putgrent(3)                Library Functions Manual                putgrent(3)

NAME
       putgrent - write a group database entry to a file

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <grp.h>

       int putgrent(const struct group *restrict grp, FILE *restrict stream);

DESCRIPTION
       The putgrent() function is the counterpart for fgetgrent(3).  The
       function writes the content of the provided struct group into the
       stream.  The list of group members must be NULL-terminated or NULL-
       initialized.

       The struct group is defined as follows:

           struct group {
               char   *gr_name;      /* group name */
               char   *gr_passwd;    /* group password */
               gid_t   gr_gid;       /* group ID */
               char  **gr_mem;       /* group members */
           };

RETURN VALUE
       The function returns zero on success, and a nonzero value on error.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |putgrent ()                                 | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       GNU.

SEE ALSO
       fgetgrent(3), getgrent(3), group(5)

Linux man-pages 6.7               2023-10-31                       putgrent(3)