git push时遇到问题:
ssh: connect to host github.com port 22: Connection timed out
$ ssh -T git@github.com
ssh: connect to host github.com port 22: Connection timed out
$ ssh -T -p 443 git@ssh.github.com
Hi xxx! You've successfully authenticated, but GitHub does not provide shell access.
$ vim ~/.ssh/config
# 添加如下
Host github.com
Hostname ssh.github.com
Port 443