To build navigate to the root directory then type make To run tsh execute ./tsh

A shell like this should appear

tsh>

Other programs can now be executed with tsh

tsh> python
Python 2.7.10 (default, Jul 15 2017, 17:16:57) 
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

To exit use CTRL^c