1.SSH
1）直接登录（每次都需要对方密码）
[root@rhel61 桌面]# ssh root@192.168.1.110
The authenticity of host '192.168.1.110 (192.168.1.110)' can't be established.
RSA key fingerprint is c9:8f:e7:f3:ce:e4:0c:9a:cf:31:ca:87:7f:f1:65:dd.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.1.110' (RSA) to the list of known hosts.
root@192.168.1.110's password:
Last login: Sun Feb 10 16:55:39 2013 from 192.168.1.106
[root@centos632 ~]# exit
logout
Connection to 192.168.1.110 closed.
2）利用RSA密钥对（只需输入一次密码就行，以后不用输）
[root@centos632 ~]# ssh-keygen （ssh-keygen -t rsa/dsa）默认RSA
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
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:
f7:49:aa:b0:b5:a0:3a:83:a3:6b:8c:f6:90:60:e2:3e root@centos632.xueyue8.com
The key's randomart p_w_picpath is:
+--[ RSA 2048]----+
| |
| |
| |
| |
|o. S . . |
|= . . + . |
|o= o . . o |
|=E+ . = o |
|*++=. . o |
+-----------------+
[root@centos632 ~]# scp /root/.ssh/id_rsa.pub 192.168.1.102:/root/.ssh/authorized_keys
The authenticity of host '192.168.1.102 (192.168.1.102)' can't be established.
RSA key fingerprint is 54:ae:d0:78:06:9b:82:c2:2c:5a:26:a3:c0:73:ce:a7.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.1.102' (RSA) to the list of known hosts.
root@192.168.1.102's password:
id_rsa.pub 100% 408 0.4KB/s 00:00
[root@centos632 ~]# ssh 192.168.1.102
[root@rhel63 ~]# ll （不需要输入密码了）
总用量 100
-rw-------. 1 root root 1633 2月 10 13:14 anaconda-ks.cfg
-rw-r--r--. 1 root root 47254 2月 10 13:14 install.log
-rw-r--r--. 1 root root 11185 2月 10 13:12 install.log.syslog
drwxr-xr-x. 2 root root 4096 2月 10 13:18 公共的
drwxr-xr-x. 2 root root 4096 2月 10 13:18 模板
drwxr-xr-x. 2 root root 4096 2月 10 13:18 视频
drwxr-xr-x. 2 root root 4096 2月 10 13:18 图片
drwxr-xr-x. 2 root root 4096 2月 10 13:18 文档
drwxr-xr-x. 2 root root 4096 2月 10 13:18 下载
drwxr-xr-x. 2 root root 4096 2月 10 13:18 音乐
drwxr-xr-x. 2 root root 4096 2月 10 16:48 桌面
[root@rhel63 ~]# exit
logout
Connection to 192.168.1.102 closed.
[root@centos632 ~]# ssh 192.168.1.102 （不需要输入密码了）
Last login: Sun Feb 10 23:39:48 2013 from 192.168.1.110
3）SCP的使用
下载远程数据到本地目录
scp user@remote.servername:/remote_path/filename /local_path/ //下载文件
scp -r user@remote.servername:/remote_path /local_path //下载目录
上传本地数据到远程数目录
scp /local_path/filename user@remote.servername:/remote_path/ //上传文件
scp -r /local_path user@remote.servername:/remote_path //上传目录
例
scp -r root@192.168.1.102:/var/ftp . ( . 代表当前目录) //下载/var/ftp 下文件到当前目录
scp -r root@192.168.1.102:/var/ftp /var/ttp/
scp /var/ttp/xxf.txt root@192.168.1.102:/var/ftp/