document ``ulimit'' builtin.

diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
index eb8d701..24a4a32 100644 (file)
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: sh.1,v 1.2 1996/06/23 14:21:32 deraadt Exp $
+.\"    $OpenBSD: sh.1,v 1.3 1996/09/15 03:41:57 millert Exp $
 .\"    $NetBSD: sh.1,v 1.15 1995/05/11 21:30:18 christos Exp $
 .\" Copyright (c) 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -1273,6 +1273,23 @@ resets trapped (but not ignored) signals to the
 default action. The trap command has no effect on
 signals that were ignored on entry to the shell.
 .TP
+ulimit [ -H | -S ] [ -a | -resource [ maximum-use ] ]
+Show or set the current process limits (see getrlimit(2)).
+If ``-a'' is specified, all current limits are shown.
+To specify
+.I hard
+or
+.I soft
+process limits, use the ``-H'' and ``-S'' options respectively
+(by default both soft and hard limits are used).
+To get or set a resource, call it by the first letter.
+For example, to set the max number of processes to 256 one
+would do ``ulimit -p 256''.  ``ulimit -p unlimited'' would
+unlimit the number of processes (or set to the maximum allowed).
+If no resource is specified,
+.I file
+size is assumed.
+.TP
 umask [ mask ]
 Set the value of umask (see umask(2)) to the specified octal value.
 If the argument is omitted, the