X-Authentication-Warning:	kendall.sfbr.org: jeffw set sender to jeffw AT darwin DOT sfbr DOT org using -f
Date:	Thu, 11 Oct 2001 08:57:28 -0500
From:	JT Williams <jeffw AT darwin DOT sfbr DOT org>
To:	djgpp AT delorie DOT com
Subject:	duplicating stdin in shell script
Message-ID:	<20011011085728.A15517@kendall.sfbr.org>
Mail-Followup-To:	djgpp AT delorie DOT com
Mime-Version:	1.0
User-Agent:	Mutt/1.2.5i
Reply-To:	djgpp AT delorie DOT com

Is it possible/practical to duplicate stdin (without using tmp files)
so that it can be scanned twice in a shell script?  If so, could someone
please show me a shell idiom to do this?

For example, suppose I want to scan a tab-delimited text file to determine
the maximum width of each field, so I can then pass stdin to `expand'
using appropriate options.

TIA/jtw

- Raw text -