-.\" Hey Emacs! This file is -*- nroff -*- source.
-.\"
.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
.\"
+.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
+.\" %%%LICENSE_END
.\"
.\" Modified Thu Oct 31 12:04:29 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@gmail.com>
argument specifies the number of supplementary group IDs
in the buffer pointed to by
.IR list .
-.SH "RETURN VALUE"
+.SH RETURN VALUE
On success,
.BR getgroups ()
returns the number of supplementary group IDs.
.TP
.B EPERM
The calling process has insufficient privilege.
-.SH "CONFORMING TO"
+.SH CONFORMING TO
SVr4, 4.3BSD.
The
.BR getgroups ()
The original Linux
.BR getgroups ()
system call supported only 16-bit group IDs.
-Subsequently, Linux 2.4 added
+Subsequently, Linux 2.4 added
.BR getgroups32 (),
supporting 32-bit IDs.
The glibc
.BR getgroups ()
wrapper function transparently deals with the variation across kernel versions.
-.SH "SEE ALSO"
+.SH SEE ALSO
.BR getgid (2),
.BR setgid (2),
.BR getgrouplist (3),