These guides and scripts only work when you have installed the full ISCE suite (see here http://earthdef.caltech.edu/).
The installation scripts describe how to setup the python environments for ISCE and GIAnT on servers that already have ISCE installed.
Clone the repository into isce_setup. Start with install_isce201704_ubuntu1604_for_users.md and follow instructions
You will need to setup ISCE first.
Start with install_giant_ubuntu1604_for_users.md and follow instructions