#!/usr/local/bin/perl use strict; use warnings; my $input_file = "../datag/enbank_entry.txt"; my $result_file = "genbank_seq.txt"; open (IN, $input_file) || die "cannot open \"$input_file\": $!"; open (OUT, ">$result_file") || die "cannot open \"$result_file\": $!"; while (my $line = ) { last if $line eq "ORIGIN\n"; } while (my $line = ) { print OUT $line; }