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Top Forums Shell Programming and Scripting Get the exact match of the string! Post 302935618 by dips_ag on Wednesday 18th of February 2015 06:18:14 AM
Old 02-18-2015
Get the exact match of the string!

Hi All,

I am breaking my head in trying to get a command that will exactly match my given string. I have searched net and found few of the options -

Code:
 
grep -F $string file
grep -x $string file
grep "^${string}$" file
awk '/"${string}"/ {print $0}' file

strangely nothing seems to work in my script?! I'm not sure what the problem is, I'm calling this command in a while loop

Code:
 
while read string
do 
 <above commands>
done < file

and the $string is not getting expanded in some cases while in some cases it attaches ^$ to the string and nothing "grep"Smilie. Please tell me what I'm doing wrong.

-dips
 

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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)
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