[Git.io](http://git.io/) 是Github的短网址服务。  你可以通过Curl命令以普通HTTP协议使用它： ~~~ $ curl -i http://git.io -F "url=https://github.com/..." HTTP/1.1 201 Created Location: http://git.io/abc123 $ curl -i http://git.io/abc123 HTTP/1.1 302 Found Location: https://github.com/... ~~~ [_进一步了解 Git.io._](https://github.com/blog/985-git-io-github-url-shortener)