wget http://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 build
python setup.py install
===============================以上为先安装Python安装模块，然后
下载pip的tar.gz包并安装
tar; cd; python setup.py install;

然后安装ngxtop,直接运行下面的即可，(有时需要先更新pip，用命令pip install --upgrade pip)
pip install ngxtop