You had an uninitialized value in your regex. Hmm... here's an easier way: 
#!/usr/bin/perl

use strict;
use warnings;

my $line = '<head><to>toe</to></head>';
print substr($line, 10, 3), "\n";

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In reply to Re: use of substr() with file by Khen1950fx
in thread use of substr() with file by satishchandra

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