linux shell（/usr/bin/expect）实现自动输入密码登录，并执行命令

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#!/usr/bin/expect 
spawn /usr/bin/ssh root@192.168.1.1
expect "*password:" 
send "123456\r" 
expect "*]#" 
send "ifconfig\r" 
expect "*]#" 
send "exit\r" 
expect eof

实现ssh密码自动输入，并执行ifconfig命令：

spawn /usr/bin/ssh root@192.168.1.1 
Address 192.168.1.1 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT! 
root@192.168.1.1's password: 
Last login: Tue Mar 10 15:05:14 2015 from 192.168.1.2
[root@test ~]# ifconfig 
eth0 Link encap:Ethernet HWaddr 00:50:56:A5:00:1A 
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 
RX packets:235112063 errors:0 dropped:0 overruns:0 frame:0 
TX packets:93490796 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:1000 
RX bytes:72881985355 (67.8 GiB) TX bytes:89899338679 (83.7 GiB) lo Link encap:Local Loopback 
inet addr:127.0.0.1 Mask:255.0.0.0 
UP LOOPBACK RUNNING MTU:16436 Metric:1 
RX packets:7443239 errors:0 dropped:0 overruns:0 frame:0 
TX packets:7443239 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:0 
RX bytes:5703083676 (5.3 GiB) TX bytes:5703083676 (5.3 GiB)

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