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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 *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). ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ¬ββββββββββ βInterface β Attribute β Value β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββΌββββββββββββββββΌββββββββββ€ βputgrent() β Thread safety β MT-Safe β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ΄ββββββββββ CONFORMING TO This function is a GNU extension. SEE ALSO fgetgrent(3), getgrent(3), group(5) GNU 2021-03-22 PUTGRENT(3)