生成基于RSA的SSH密钥之后:
ssh-keygen -t rsa -f ~/.ssh/id_rsa -C id_rsa
#=>
Generating public/private rsa key pair.
Created directory '/. . ./.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /. . ./.ssh/.id_rsa.
Your public key