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foreach (@files) { /(prefix)(_)(\d+)(_)(\d+)(_)(\w+)(_)(\w+)(_)(\w+)(\.)(\w+)/; $filename = "$1$2$3$4$5$6$7$8$9$10$11$12$13"; print "name of file: $filename \n"; print "\n";<c>
use strict; use warnings; ... my $filename = sprintf "S%06d.txt",$step; open my $tfh,'>',$filename; }