* CHANGES
* README
* MANIFEST
* Rakefile
* ptools.gemspec
* lib/ptools.rb
* test/ts_all.rb
* test/tc_constants.rb
* test/tc_head.rb
* test/tc_image.rb
* test/tc_middle.rb
* test/tc_nlconvert.rb
* test/tc_null.rb
* test/tc_tail.rb
* test/tc_touch.rb
* test/tc_wc.rb
* test/tc_which.rb
* test/tc_whereis.rb
* test/test_file.txt
* test/test_file2.txt