Path: utzoo!utgpu!water!watmath!clyde!bellcore!decvax!ucbvax!hplabs!pyramid!prls!mips!hitz
From: hitz@mips.UUCP (David Hitz)
Newsgroups: comp.unix.questions
Subject: Re: Detecting pipe closure in shell script
Summary: | (tee $TMP && mv $TMP $REAL || rm $TMP ) | more
Message-ID: <1345@quacky.UUCP>
Date: 16 Jan 88 10:40:02 GMT
References: <380@dlhpedg.co.uk>
Reply-To: hitz@quacky.UUCP (David Hitz)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 20

In article <380@dlhpedg.co.uk> cl@datlog.co.uk (Charles Lambert) writes:
>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
...
>Charles Lambert

Try

	| (tee "$TMP" && mv "$TMP" "$REAL" || rm "$TMP" ) | more

If the more dies, then the tee fails because it cannot finish its 
writes.  Note that the code above also has the effect of removing
the $TMP file if the mv failes.
-- 
Dave Hitz
UUCP: {decvax,ucbvax,ihnp4}!decwrl!mips!hitz 	DDD: hitz@408-991-0345