Re: Using imbedded commands inside expr(1)

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Article #1761

#1761

From: Tom Christiansen
Date: Thu, 08 Nov 1990 03:38

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In article <1462@eastman.UUCP> gerwitz@kodak.com (Paul Gerwitz) writes:
>I seem to be having trouble using expr [in ksh].  The following dies:
>
>    test=`expr `tail +3 file` + 1` 

Write it this way:

    test=$(expr $(tail +3 file) + 1)

--tom

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Message-ID: <108387@convex.convex.com>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!convex!convex.COM

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!convex!convex.COM
From: tchrist@convex.COM (Tom Christiansen)
Newsgroups: comp.unix.shell
Subject: Re: Using imbedded commands inside expr(1)
Message-ID: <108387@convex.convex.com>
Date: 8 Nov 90 03:38:25 GMT
References: <1462@eastman.UUCP>
Sender: usenet@convex.com
Reply-To: tchrist@convex.COM (Tom Christiansen)
Organization: CONVEX Software Development, Richardson, TX
Lines: 10

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