EDIT: Updated script. This works for me: 
use strict;
use warnings;

print "Enter left side for search: ";
my $LeftSide = <STDIN>;
print "Enter right side replacement: ";
my $RightSide = <STDIN>;

chomp($LeftSide);
chomp($RightSide);

while(<DATA>){    
    print if s/$LeftSide/$RightSide/g;
    #print "Replaced \"$LeftSide\" with \"$RightSide\" at: line $.: $_
+" if ($_ =~ s/$LeftSide/$RightSide/g);
}

__DATA__
hello
this. is line 2
line, 3 ),(
this is test for line 4 )
testing line ,5
now testing line (6)

[download]
ran it with script.pl \),\( \)\n\(
Outputs: 
C:\Users\James\Desktop>test.pl \),\( \)\n\(
Replaced "\),\(" with "\)\n\(" at: line 3 "line, 3 \)\n\("

[download]

Posting some example input would be helpful :)

In reply to Re: Regex stored in a scalar by james28909
in thread Regex stored in a scalar by OtakuGenX

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