$ cd ..
$ pwd
/home/bob/Documents/meditations/Algorithm-Markov-Multiorder-Learner-master
$ cd blib/
$ cd script/
$ pwd
/home/bob/Documents/meditations/Algorithm-Markov-Multiorder-Learner-master/blib/script
$ ls
analyse_DNA_sequence.pl  analyse_text.pl   predict_text.pl

analyse_image.pl         predict_image.pl  read_state.pl
$