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From: itkin@mrspoc.Transact.COM (Steven M. List)
Newsgroups: comp.unix.questions
Subject: Re: Variables in csh
Message-ID: <1991May2.234435.6083@mrspoc.Transact.COM>
Date: 2 May 91 23:44:35 GMT
References: <9105020702.AA06707@csufres.CSUFresno.EDU>
Reply-To: steven@Transact.COM
Organization: Transact Software
Lines: 43

quang@CSUFRES.CSUFRESNO.EDU (Quang Ngo) writes:


>1) In csh, we can have something like
>
>set a = (This is a string)
>echo $a[2]
>
>which prints 'is'   
>
>Now, let's say I have
>
>set a = "This is a string"
>               
>How do I print 'str' ?

    expr "$a" : '.\{10\}\(...\).*' 

or
    
    echo "$a" | cut -c11-13

or...

>2) Let's say I have a file 'data' which contains the following 3 lines.
>...
>The question is how?  I know how to take care these problems in (n/g)awk.

I don't have an answer to the second one in C shell syntax.  In Bourne
(/bin/sh) it's easy:

    while read $LINE
    do
        echo $LINE
    done < datafile

and variations on that theme.  But csh doesn't have anything quite like
"read".
-- 
 +----------------------------------------------------------------------------+
 :                Steven List @ Transact Software, Inc. :^>~                  :
 :           Chairman, Unify User Group of Northern California                :
 :                         itkin@Transact.COM                                 :