These instructions and directories were obtained from:
    git clone http://github.com/milfeld/class

Instructions:


First,
execute the commands in do to make sure everything is working.


Then, make sure the correct path is on the first line of the do_cmd
file:
     Type:
       which python


     Make sure the path from the "which" command is the same as the
     one on the first line in the do_cmd (change it if necessary).


     Now, execute the do_cmd:

       do_cmd

       OR

       ./do_cmd       #if "." is not in your path.