#!/usr/bin/perl print "reading 'ansvarig_vardenhet_utf8.txt'\n"; open(WIN, "icd-10-codes.txt"); while($line = ) { @columns = split(/\t/, $line); #print "$columns[1]"; foreach my $value (@columns) { #print "$value\n" } } close(WIN); print "reading 'ansvarig_vardenhet_utf8.txt'\n"; open(IN, "female1.txt"); while($line = ) { %col = split(/ /, $line); #print "$columns[1]\n"; foreach my $val (%col) { if($val == $columns[0]){ $val =~ s/$val/$columns[1]/g; print IN ">>$val\n"; } } } close(IN);