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From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.unix-wizards
Subject: Re: Bourne shell io redirection with <> -- what is it?
Message-ID: <9767@brl-tgr.ARPA>
Date: Sat, 6-Apr-85 08:58:01 EST
Article-I.D.: brl-tgr.9767
Posted: Sat Apr  6 08:58:01 1985
Date-Received: Mon, 8-Apr-85 01:17:36 EST
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Organization: Ballistic Research Lab
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> Does anyone know what the undocumented <> io redirection metacharacter
> sequence in the bourne shell does?

It opens the subsequently-named file in mode 2 (read+write).

> Is it useful?

I've never found a reason to use it.