???????????????????????ssh key??????????鈥�???????A??111.111.111.111??????B??222.222.222.222??
????????????????????hostA@email.com??hostB@email.com??????????ssh?????娴�???位??????纾�
????# ????A?????/c/user/.ssh/id_rsa
????ssh-keygen -t rsa –C “hostA@email.com”
????# ????B?????/c/user/.ssh/hostb/id_rsa
????ssh-keygen –t rsa –C “hostB@email.com”
????/c/user/.ssh/hostb/id_rsa  # ?????????娲⑽�?????????
?????????/c/user/.ssh/???锟�????????“config”????????????????????
Host 111.111.111.111
HostName 111.111.111.111
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
Host 222.222.222.222
HostName 222.222.222.222
PreferredAuthentications publickey
IdentityFile ~/.ssh/hostb/id_rsa
????????????锟�?
????$ ssh -T 111.111.111.111
????$ ssh -T 222.222.222.222