Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!ncar!bierstadt.scd.ucar.edu!tparker
From: tparker@bierstadt.scd.ucar.edu (Tom Parker)
Newsgroups: comp.unix.questions
Subject: Re: How read a line of a file from C-shell?
Message-ID: <8913@ncar.ucar.edu>
Date: 23 Oct 90 00:48:21 GMT
Sender: news@ncar.ucar.edu
Reply-To: tparker@bierstadt.scd.ucar.edu (Tom Parker)
Organization: Scientific Computing Division/NCAR, Boulder, CO
Lines: 39

Thanks to all those that replied.
 
Several suggested using the C-shell $< function to read the lines from
stdin.  This would work, except that I am submitting my C-shell script as
a job to a remote UNICOS system via NQS, and can't specify a stdin to my
script (the script is the job itself).
 
(By the way, I think that using `line` might be better than $<, since
then you can check for an EOF with $status).
 
One person suggested using 'cat' and setting IFS, but IFS is only in
Bourne shell.
 
The most feasible tip (so far) was to read the file using sed, e.g.:
 
         set lines = `wc -l $file`
 
         while ($i <= $lines[1])
            set line = `sed -n ${i}p $file`
            echo $i $#line $line
            # (Process $line here)
            @ i++
         end
 
This seems to work well, as long as the file doesn't contain any
meta-characters.  (I could put the `sed ...` in double quotes, but then I
can't tokenize the line).
 
Thanks to all that replied,
Tom
 
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|                               Tom Parker                                  |
|                                                                           |
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