sub checkFile()
{
   my @file = <$filehandle>;
   print( "&lt;BR&gt;&lt;BR&gt;@file&lt;BR&gt;&lt;BR&gt;" );
   foreach my $line ( @file )
   {
      chomp( $line );
      if( $line =~ /([^ACGTacgt])/ )
      {
         next;
      }
      else
      {
         my @cols = split( /\s/, $line );
         print( "@cols" );
      }
   }
}