I am trying to write a program that opens a huge file, reads it in one line at a time, works on that with a regex entered earlier in the code for STDIN and then outputs it to a new file. In the past I have done this work in Vi, but the files are so big that it takes a LONG time. I had hard coded Perl scripts to do this, but the files change regularly and or I am asked for other data. So what I was trying to do was write a script that would ask me for the regex at the time of running without me having to hard code the regex. Here is what works 
open (INPUTFILE, "< $filein");
while (<INPUTFILE>) {
    my $line=$_;
    $line =~ s/\),\(/\)\n\(/gi;
};

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But if I do this: 
my $regex=<STDIN>;                    #Entering s/\),\(/\)\n\(/gi 
chomp $regex;
open (INPUTFILE, "< $filein");
while (<INPUTFILE>) {
    my $line=$_;
    $line =~ $regex;
};

[download]
It does nothing. I could really use some help :-)

In reply to Regex stored in a scalar by OtakuGenX

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