01-29-2009
sh vs csh question
I have inherited the UNIX scripting duties on our team and have only been at this for few months. I apologize for what may be a basic question.
We have this snippet of code that gets lines from a file (using grep) based on a parameter we pass in (code shown below).
My question about this is that this code works when we execute it in a c-shell (#!/bin/csh) but not in bourne shell (#!/bin/sh).
I was wondering if there is a syntactical difference for this, and / or if there would be bourne shell equivalent.
Every script we have runs bourne shell, so I am wondering if there is any potential problems running this one as c-shell; better put, I'd be reluctant to run it as c-shell just for the sake of keeping this code.
Any info or direction would be greatly appreciated,
thanks
JH
set RECORDS = `grep ^$1 ${CFGFILE} | grep 'C$'`
foreach record ( ${RECORDS} )
set rSID = `echo $record | tr -s " " | cut -f1 -d","`
set rCLIENT = `echo $record | tr -s " " | cut f2 -d","'
set rINSTANCE = `echo $record | tr -s " " | cut -f3 -d","`
set rSERVER = `echo $record | tr -s " " | cut -f4 -d","`
set rTYPE = `echo $record | tr -s " " | cut -f5 -d","`
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ZGREP(1) General Commands Manual ZGREP(1)
NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)
ZGREP(1)