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Full Discussion: Unix grep in perl script
Top Forums Programming Unix grep in perl script Post 302646439 by Jaymoney on Friday 25th of May 2012 07:00:28 AM
Old 05-25-2012
Unix grep in perl script
Hello,

Fairly simple really I have an xml file and I want to check to see if it contains a pattern. The pattern is "../"

On the command line I can type: grep "\.\./" myFile.xml
and I get desired result.

To do the same thing in a perl script I thought it was as simple as putting the `` around the command but it won't work no matter what I do.

Code:
$check = `grep "\.\./" $myFile`;

I've tried different variations of the command such as escaping the / but still no joy. No matter what it seems to be returning every line from the file that contains a . OR a /

Anyone have any insight into this?
 

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LEARN ABOUT CENTOS

bzgrep

BZGREP(1)						      General Commands Manual							 BZGREP(1)

NAME

       bzgrep, bzfgrep, bzegrep - search possibly bzip2 compressed files for a regular expression

SYNOPSIS

       bzgrep [ grep_options ] [ -e ] pattern filename...
       bzegrep [ egrep_options ] [ -e ] pattern filename...
       bzfgrep [ fgrep_options ] [ -e ] pattern filename...

DESCRIPTION

       Bzgrep  is  used to invoke the grep on bzip2-compressed files. All 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  bzgrep  is  invoked as bzegrep or bzfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, bzgrep
       uses it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	bzgrep string files
	   for csh: (setenv GREP fgrep; bzgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca). Adapted to bzip2 by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.

SEE ALSO

       grep(1), egrep(1), fgrep(1), bzdiff(1), bzmore(1), bzless(1), bzip2(1)

																	 BZGREP(1)
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