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From: davr@hrtix.UUCP (David C. Raines)
Newsgroups: comp.unix.questions
Subject: Re: Bourne shell question
Summary: Solution
Keywords: pipe, logical 'or' and " pg ".
Message-ID: <256@hrtix.UUCP>
Date: 12 Oct 89 15:03:03 GMT
References: <1943@sactoh0.UUCP>
Reply-To: davr@hrtix.UUCP (David C. Raines)
Distribution: usa
Organization: Treasure Chest Advertising, Windsor Locks, CT
Lines: 21

In article <1943@sactoh0.UUCP> jak@sactoh0.UUCP (Jay A. Konigsberg) writes:
>
>I have a small shell script that I can't get quite right. What it
>ls -l | grep "^d" | pg || echo "There are no subdirectories"

pg returns 'exit 0' whether there is any input or not, so the second half
of the 'or' is never executed.  The following should do what you intended,
with the minor glitch that the 'no subdirectories' message also ends in
a page 'EOF:' prompt.

(ls -l | grep "^d" || echo "There are no subdirectories") | pg

Or you could write a more complex script that saved $? from the grep
command, etc.
>
>Thanks to all who respond.

You are welcome.
-- 
David Raines			TCA  5 National Dr., Windsor Locks, CT 06096
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