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From: cl@datlog.co.uk (Charles Lambert)
Newsgroups: comp.unix.questions
Subject: Detecting pipe closure in shell script
Message-ID: <380@dlhpedg.co.uk>
Date: 14 Jan 88 16:47:24 GMT
Sender: news@dlhpedg.co.uk
Reply-To: cl@datlog.co.uk (Charles Lambert)
Organization: FSG@Data Logic Ltd, Queens House, Greenhill Way, Harrow, London.
Lines: 21

I have a shell script with the following fragment in it:

    | tee $TFILE | more

If I quit more(1) before output from tee(1) is complete, I want to
scrap $TFILE,  else I want to move it to another name.  I've tried

    | ( trap 'rm $TFILE' 13; tee ) | more;
    mv $TFILE othername

and

    | ( tee ; mv $TFILE othername) | more

but in both cases the move occurs regardless of completion (in the second
case, the "mv" seems to be executing even after shell script has exited).

Any smart tricks?

----------------------
Charles Lambert