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.\" Copyright 2003 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH PUTGRENT 3 2003-09-09 "GNU" "Linux Programmer's Manual"
.SH NAME
putgrent \- write a group database entry to a file
.SH SYNOPSIS
.B #define _GNU_SOURCE
.br
.B #include <grp.h>
.sp
.BI "int putgrent(const struct group *" grp ", FILE *" fp );
.SH DESCRIPTION
The
.BR putgrent ()
function is the counterpart for
.BR fgetgrent (3).
The function writes the content of the provided \fIstruct group\fP into the
file pointed to by
.IR fp .
The list of group members must be NULL terminated or NULL initialized.
.sp
The \fIstruct group\fP is defined as follows:
.sp
.in +4n
.nf
struct group {
char *gr_name; /* group name */
char *gr_passwd; /* group password */
gid_t gr_gid; /* group ID */
char **gr_mem; /* group members */
};
.fi
.in
.SH "RETURN VALUE"
The function returns zero on success, and a non-zero value on error.
.SH "CONFORMING TO"
This function is a GNU extension.
.SH "SEE ALSO"
.BR fgetgrent (3),
.BR getgrent (3),
.BR group (5),
.BR feature_test_macros (7)
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