git设置多用户
ssh-keygen -t rsa -C "mygithubemail@mail.com" -f ~/.ssh/id_rsa_github
ssh
-keygen -t rsa -C
"mygithubemail@mail.com"
-f ~/.
/id_rsa_github
ssh-agent bash
ssh-add ~/.ssh/id_rsa_github
ssh -T git@github.com