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From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein)
Newsgroups: comp.unix.shell
Subject: Re: cat, pipes, and filters
Message-ID: <24071:Jun214:03:1191@kramden.acf.nyu.edu>
Date: 2 Jun 91 14:03:11 GMT
References: <1991May31.165446.1530@progress.com> <16438@darkstar.ucsc.edu> <13798@dog.ee.lbl.gov>
Organization: IR
Lines: 9

In article <13798@dog.ee.lbl.gov> torek@elf.ee.lbl.gov (Chris Torek) writes:
  [ why cat foo | blah | tee foo involves race conditions ]

More to the point, if you want to have blah read foo and write its
output to a new copy of foo, do something like this:

  ( rm foo; blah > foo ) < foo

---Dan