Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!indri!nic.MR.NET!hal!ncoast!allbery
From: allbery@ncoast.ORG (Brandon S. Allbery)
Newsgroups: comp.unix.wizards
Subject: Re: /dev/fd
Message-ID: <13588@ncoast.ORG>
Date: 21 Apr 89 00:33:52 GMT
References: <16817@mimsy.UUCP> <257@jwt.UUCP>
Reply-To: allbery@ncoast.UUCP (Brandon S. Allbery)
Followup-To: comp.unix.wizards
Organization: Cleveland Public Access UN*X, Cleveland, Oh
Lines: 25

As quoted from <257@jwt.UUCP> by john@jwt.UUCP (John Temples):
+---------------
| In article <16817@mimsy.UUCP> chris@mimsy.UUCP (Chris Torek) writes:
| >shuffle puts them back), then the ksh syntax
| >
| >	shuffle <(process1) <(process2)
| >
| >produces on standard output the combined output of the two processes,
| 
| I tried this (with diff, not shuffle) on two different kshs, and both barfed
| on the syntax.  Is this only supported under certain versions of ksh or Unix?
+---------------

The only ksh'es I've used require that Unix have the /dev/fd/n driver
installed to do this.  While it is possible to get this behavior by the use
of named pipes, ksh doesn't use them when /dev/fd/n doesn't exist.  (Perhaps
the most recent version, released a month or so ago if I remember correctly,
does -- but *I* don't have it and chances are that you don't either.)

++Brandon
-- 
Brandon S. Allbery, moderator of comp.sources.misc	     allbery@ncoast.org
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