第一步，下载脚本：
wget -O cs https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py
第二步：移动脚步到/bin/方便全局执行
mv cs /bin/
给个小权限
chmod 0777 /bin/cs
然后直接执行cs就能测速啦：
cs
结果大致如下：
Retrieving speedtest.net configuration... Testing from Tencent (xxxxxxx)... Retrieving speedtest.net server list... Selecting best server based on ping... Hosted by Beijing Telecom (Beijing) [1.69 km]: 25.098 ms Testing download speed................................................................................ Download: 219.28 Mbit/s Testing upload speed................................................................................................ Upload: 113.03 Mbit/s