After a LOT of time spent on this, I finally found a solution that works.
The primary issue is that the cygwin didn't come with python installed, and doesn't know where to find the existing Windows Anaconda version on your machine. This can be verified by running which python from within cygwin - it couldn't find where python is saved. Note that this can be confusing because running pip install awscli likely doesn't throw an error message. Cygwin actually installs awscli in the Window's Anaconda installation of Python (I find this odd since we didn't run conda install awscli).
HOWEVER, rather than try to point cygwin to the already installed version of Anaconda python on your machine it will save you a ton of headache to just install a cygwin-specific instance of python.
The initial steps to run in cygwin are (documented here: http://wiki.fast.ai/index.php/Awscli_in_cygwin)
pip uninstall awscli
install apt-cyg /bin
apt-cyg install python
...Note, however, that the first command
pip uninstall awscli "hung up" for me. So just escape out of it using
quit() and continue with the others in order.
You can check that everything worked if you run
which python in cygwin and it points to the cygin version (i.e. /usr/bin/python , as opposed to: /users/.../Anaconda2/).
The next CRITICAL step is that when you download all the shell scripts from Github setup folder (https://github.com/fastai/courses/tree/master/setup), Windows automatically CRLF line terminators! Therefore, in cygwin, run the following commands:
apt-cyg install dos2unix
- then finally,
This should do the trick.