1. >http://stackoverflow.com/questions/16335327/fasta-delete-sequences-after-n-length
  2. abcdef
  3. >bar
  4. ....5...10....5...20....5...30....5...40....5...50....5
  5. ...60....5...70....5...80....5...90....5..100....5...10
  6. ....5...20....5...30....5...40....5...50....5...60....5
  7. ...70....5...80....5...90....5..200....5...10....5...20
  8. ....5...30....5...40....5...50
  9. >baz
  10. abcdef