Multiple SSH Keys settings for different github account

本文引用文章：https://gist.github.com/jexchan/2351996

產生ssh key
$ ssh-keygen -t rsa

將ssh key，複製到~/.ssh
$ ~/.ssh/id_rsa_activehacker

改變ssh key權限
$ chmod 400 id_rsa_activehacker

$ cd ~/.ssh/

$ touch config
#activehacker account
Host github.com-activehacker
    HostName github.com
    User git
    IdentityFile ~/.ssh/id_rsa_activehacker