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From: bx970@cleveland.Freenet.Edu (Donna A. Lilly)
Newsgroups: comp.unix.bsd
Subject: Re: command output substitution in sh script
Date: 30 Nov 1993 23:42:58 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Lines: 23
Message-ID: <2dglq2$kau@usenet.INS.CWRU.Edu>
References: <2dgje8$grv@usenet.INS.CWRU.Edu>
Reply-To: bx970@po.cwru.edu (Donna Lilly)
NNTP-Posting-Host: nextsun.ins.cwru.edu
In a previous article, bx970@cleveland.Freenet.Edu (Donna A. Lilly) says:
>Earlier I asked about testing if a file exists csh scripts and I was
>convinced to use sh for programming. One problem I have is with
>substitution of a commands output and testing the resulting value in the sh
>syntax. E.g.
>
>I want to process files that start with someprefix a period followed by two
>digits (just for an example). I couldn't get this to work in the sh syntax.
>
>in csh:
>
>if (`cat $file | egrep 'someprefix\.[0-9][0-9]$' | wc -c` > 13) then
^^^
Oops! I meant to say `echo $file ... not cat (I wanted to test the
filename not file contents).
Anyhow, anyone know how this is done in sh scripts?
Thanks a lot for any help,
--
Donna Lilly
Cleveland, OH