One way is to use tr 
use warnings;
use strict;

my $num = '0001144204-09-017358';
print "$num\n";
$num =~ tr/-//d;
print "$num\n";

__END__

0001144204-09-017358
000114420409017358

[download]

In reply to Re: REGEX omit dashes - simple but ... by toolic
in thread REGEX omit dashes - simple but ... by wrkrbeee

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