vi /etc/rc.local
ssserver -c /etc/shadowsocks.json -d start
ImportError: cannot import name main
vim /usr/bin/pip
from pip import __main__
if __name__ == '__main__':
sys.exit(__main__._main())
ImportError: No module named setuptools
wget https://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz
tar zxvf setuptools-0.6c11.tar.gz
cd setuptools-0.6c11
python setup.py install
install setuptools module
# for python2.x
sudo apt-get install python-setuptools
# for python3.x
sudo apt-get install python3-setuptools