Path: utzoo!attcan!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: shell file descriptor programming (was: Unlinked temp files)
Message-ID: <1682@auspex.auspex.com>
Date: 22 May 89 19:04:38 GMT
References: <871@marvin.Solbourne.COM> <1015@philmds.UUCP> <296@tree.UUCP> <11566@ulysses.homer.nj.att.com> <1508@murtoa.cs.mu.oz.au> <11572@ulysses.homer.nj.att.com>
Reply-To: guy@auspex.auspex.com (Guy Harris)
Organization: Auspex Systems, Santa Clara
Lines: 12

>If you know of a portable way to do this (ie, one that works on BSD 4.x,
>System V Release 1 through 4, POSIX, etc.), please let me know.

You don't need a portable one.  All you need is a way to tell what kind
of system you have (something that, as far as I know, the "ksh"
configuration script already *has*), so you know whether to:

	1) compile the number in;

	2) fetch it with "getdtablesize" (BSD4.2 and later);

	3) fetch it with "ulimit(4, 0L)" (S5R3.0 and later).