两台机子,A(user1机子上) ,B.每次scp B:/home/user时,都需要密码,很是麻烦,做如下操作:

在机子A上:

     [user1@rh user1]$ ssh-keygen -t rsa(下面的是提示信息,目的是为了不想有密码,则可全部按enter,一直到最好)

　　Generating public/private rsa key pair.

　　Enter file in which to save the key (/home/user1/.ssh/id_rsa):

　　Created directory '/home/user1/.ssh'.

　　Enter passphrase (empty for no passphrase):

　　Enter same passphrase again:

　　Your identification has been saved in /home/user1/.ssh/id_rsa.

　　Your public key has been saved in /home/user1/.ssh/id_rsa.pub.

　　The key fingerprint is:

　　e0:f0:3b:d3:0a:3d:da:42:01:6a:61:2f:6c:a0:c6:e7 user1@rh.test.com

修改一下 .ssh 目录的权限，使用命令 "chmod 755 ~/.ssh"

之后把这个密钥对中的公共密钥复制到你要访问的机器上去，并保存为
~/.ssh/authorized_keys.

       [user1@rh user1]$ scp ~/.ssh/id_rsa.pub rh1:/home/user1/.ssh/authorized_keys

　　user1@rh1's password:

　　id_rsa.pub 100% 228 3.2MB/s 00:00

结束之后 ,在A上再用scp命令,则不用输入密码了,呵呵

出处：http://www.linuxpk.com/5102.html

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