Super fast install: eval "$(curl -fsSL https://gist.github.com/hupili/7020251/raw/get-snsapi-cde.sh)"

get-snsapi-cde.sh

#!/usr/bin/env sh
# Download SNSAPI's CDE (64bit) package and cd into the environment. 
# Execute ./snsali.py.cde after that. 
# More info.: https://github.com/hupili/snsapi/wiki/Installation

if [ `uname -m` == "x86_64" ]; then
    wl="64"
else
    wl="32"
fi

rm -f cde-package-latest.tar.gz
echo "start to download: http://snsapi.ie.cuhk.edu.hk/cde/$wl/cde-package-latest.tar.gz"
curl "http://snsapi.ie.cuhk.edu.hk/cde/$wl/cde-package-latest.tar.gz" > cde-package-latest.tar.gz
tar -zxvf cde-package-latest.tar.gz  
cd cde-package/cde-root/home/hpl/snsapi
echo "========================"
echo "Successfully get SNSAPI"
echo "To start the command-line interface, type: ./snscli.py.cde"
echo "Have fun!"
#./snscli.py.cde

It can not run on all platforms due to various problems of CDE. CDE is out of maintainence and you can try to debug according to their FAQ: http://www.pgbovine.net/cde/manual/faq.html

The VM of SageMath Cloud is free and very easy to use. The one-liner works well on it.

This one-liner is only intended for quick initial trial of SNSAPI. For formal use, please follow the normal ways to install it, e.g. pip, Git.