while ($line = <MAIN_FILE1>){
chomp $line;

  if (exists $hash1{$entry}) {
        print OUTPUT1 "$filename\n"; 
#I do not have a next statement here                
#because i want to continue 
#checking if this entry also exists 
#in hash2...
    }

  if (exists $hash2{$entry}) {
        print OUTPUT2 "$filename\n";
        next;
    }
        print OUTPUT1 "$filename\n";
        next;
}

close(MAIN_FILE1)