Host github.com git
HostName github.com
User git
IdentityFile ~/.ssh/github # I've tried also /home/freinn/.shh/github
没有/home/freinn/github创建文件，我必须创建它吗？
这是完整的警告：
Warning: Identity file /home/freinn/github not accessible: No such file or directory.
Hi freinn! You've successfully authenticated, but GitHub does not provide shell access.
[freinn@freinn ruby]$ ssh -v git@github
OpenSSH_5.9p1, OpenSSL 1.0.0j-fips 10 May 2012
debug1: Reading configuration data /home/freinn/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 50: Applying options for *
ssh: Could not resolve hostname github: Name or service not …