Using imbedded commands inside expr(1)

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Article #1720

#1720

From: Paul Gerwitz
Date: Wed, 07 Nov 1990 19:06

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I seem to be having trouble using expr.  The following dies:

    test=`expr `tail +3 file` + 1` 

    Basically get a numeric value from a file and increment it, putting the
    result in a shell variable.

    I have tried all kinds of convolutions of quoting etc.
    Temporarily we have broken it up into several seperate statements.

    Any clues ??

    Running HP-UX at 7.0 using ksh.


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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!udel!rochester!kodak!eastman!kodak.com
From: gerwitz@kodak.com (Paul Gerwitz)
Newsgroups: comp.unix.shell
Subject: Using imbedded commands inside expr(1)
Message-ID: <1462@eastman.UUCP>
Date: 7 Nov 90 19:06:52 GMT
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Originator: gerwitz@hpcore