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PUTGRENT(3)                Linux Programmer's Manual               PUTGRENT(3)
NAME
       putgrent - write a group database entry to a file
SYNOPSIS
       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #include <grp.h>
       int putgrent(const struct group *grp, FILE *stream);
DESCRIPTION
       The putgrent() function is the counterpart for fgetgrent(3).  The func-
       tion 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 |
       +-----------+---------------+---------+
CONFORMING TO
       This function is a GNU extension.
SEE ALSO
       fgetgrent(3), getgrent(3), group(5)
COLOPHON
       This page is part of release 4.15 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.
GNU                               2017-09-15                       PUTGRENT(3)