putgrent(3) Library Functions Manual putgrent(3)

putgrent - write a group database entry to a file

Standard C library (libc, -lc)

#define _GNU_SOURCE         /* See feature_test_macros(7) */
#include <grp.h>
int putgrent(const struct group *restrict grp, FILE *restrict stream);

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 */ };

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

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

Interface Attribute Value
putgrent () Thread safety MT-Safe


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

2023-10-31 Linux man-pages 6.06