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Full Discussion: grep vs do while read
Top Forums Shell Programming and Scripting grep vs do while read Post 302281788 by Corona688 on Thursday 29th of January 2009 12:26:41 PM
Old 01-29-2009
Yes, csh is very different from sh, and you're doing well to avoid it.

Code:
RECORDS = `grep ^$1 ${CFGFILE} | grep 'C$'`
for record in ${RECORDS}
do
        rSID = `echo $record | tr -s " " | cut -f1 -d","`
        rCLIENT = `echo $record | tr -s " " | cut f2 -d","'
        rINSTANCE = `echo $record | tr -s " " | cut -f3 -d","`
        rSERVER = `echo $record | tr -s " " | cut -f4 -d","`
        rTYPE = `echo $record | tr -s " " | cut -f5 -d","` 
done

This is just a direct transliteration, as inelegant as it started as. There's probably a better way, avoiding the creation of 15 superfluous processes if we knew exactly what this script did.
Last edited by Corona688; 01-29-2009 at 01:32 PM..
 

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LEARN ABOUT NETBSD

zfgrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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