>001.b1 gnl|ti|10009 GCTAGTGCTAGCTAGCTAGCATCGATCGAT >002.b1 gnl|ti|10010 CAGTCAGTCGTAGTGCTAGCTGATGCTCGT >003.b1 gnl|ti|10011 CGATCGTAGTCGTATCGATGCTGACGTAGG >004.b1 gnl|ti|10012 CGATGCTAGTCGTAGTGCTAGTGCTATGTC >005.b1 gnl|ti|10013 CAGTCGTAGTCGATGCTGTATCATAGCGTA >006.b1 gnl|ti|10014 ACAGTGCTAGCTGATCGTAGCTGAGCGGAG >007.b1 gnl|ti|10015 AGCTAGCTGATGTCGATGCTGATCGTGATG >008.b1 gnl|ti|10016 CGATGCTGATGCTGATGCTGTAGCTATACG >008.g1 gnl|ti|10017 GCTAGCTAGTCGTAGTCGTAGTGTCGTAGG >009.b1 gnl|ti|10018 CGATGCTAGTCGTAGTCGTAGCTGATGCGT >010.b1 gnl|ti|10019 CGATCGTAGTCGTAGCTGATGCTGTAGCTG >010.g1 gnl|ti|10020 CGTAGCTGATCGTAGCGTGACTGTAGCTGG >011.b1 gnl|ti|10021 CGTAGCTGATGCTGATCGTAGCTAGTCGAT >011.g1 gnl|ti|10022 CAGCTGATCGTAGCTGATGCTGATGTGTGT #### >001.b1 gnl|ti|10009 GCTAGTGCTAGCTAGCTAGCATCGATCGAT >002.b1 gnl|ti|10010 CAGTCAGTCGTAGTGCTAGCTGATGCTCGT >003.b1 gnl|ti|10011 CGATCGTAGTCGTATCGATGCTGACGTAGG >004.b1 gnl|ti|10012 CGATGCTAGTCGTAGTGCTAGTGCTATGTC >005.b1 gnl|ti|10013 CAGTCGTAGTCGATGCTGTATCATAGCGTA >006.b1 gnl|ti|10014 ACAGTGCTAGCTGATCGTAGCTGAGCGGAG >007.b1 gnl|ti|10015 AGCTAGCTGATGTCGATGCTGATCGTGATG >008.b1 gnl|ti|10016 CGATGCTGATGCTGATGCTGTAGCTATACG >008.g1 gnl|ti|10017 GCTAGCTAGTCGTAGTCGTAGTGTCGTAGG >009.b1 gnl|ti|10018 CGATGCTAGTCGTAGTCGTAGCTGATGCGT >010.b1 gnl|ti|10019 CGATCGTAGTCGTAGCTGATGCTGTAGCTG >010.g1 gnl|ti|10020 CGTAGCTGATCGTAGCGTGACTGTAGCTGG >011.b1 gnl|ti|10021 CGTAGCTGATGCTGATCGTAGCTAGTCGAT >011.g1 gnl|ti|10022 CAGCTGATCGTAGCTGATGCTGATGTGTGT #### ...... s/^>//mg; my ($name) = /^([^\n]+)/; if($hash{$name} == 10){ select FILE1; } if($hash{$name} == 20){ select FILE2; } if($hash{$name} == 30){ select FILE3; } } #print ">$_"; my $output = $_; print ">$output\n";