菜鸟学习-scp无验证密传输

scp 注意权限

1、client 

2、 server 

ssh-keygen -b 1024 -t rsa

Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):   直接回车  3次
Enter passphrase (empty for no passphrase):  直接回车
Enter same passphrase again:   直接回车
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
09:2d:4f:c0:db:c7:e6:92:9c:7d:ff:d8:8f:6c:18:99 root@test
The key's randomart image is:
+--[ RSA 1024]----+
| .. |
| .o |
| ooo. |
| .=..+ |
| .SB o |
| = o E |
| . . + |
| ..o+ |
| .+.=|
+-----------------+

2.  ~/.ssh 目录设置权限：
#chmod -R 755 .ssh
将 client  .ssh 目录中的 id_rsa.pub 文件复制到server主机 ~/.ssh/ 目录中，并改名为 authorized_keys ，同样给该目录设置权限。
#.chmod 600 ~/.ssh/id_rsa(在client上操作)
注意权限
3. 到主机client中执行命令和主机server建立信任

scp ~/.ssh/id_rsa.pub 10.2.8.8:/root/.ssh/authorized_keys

4、这样就可无秘钥命令执行
scp time_01  root@10.2.8.8:/home/backup252