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Linux 2.6 - man page for putgrent (linux section 3)

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 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 | +-----------+---------------+---------+
CONFORMING TO
This function is a GNU extension.
SEE ALSO
fgetgrent(3), getgrent(3), group(5)
GNU
2017-09-15 PUTGRENT(3)

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