#!/usr/bin/expect  
  
set timeout 30  
spawn ssh -p [lindex $argv 0] [lindex $argv 1]@[lindex $argv 2]  
expect {  
        "(yes/no)?"  
        {send "yes\n";exp_continue}  
        "password:"  
        {send "[lindex $argv 3]\n"}  
}  
interact

好东西, 一看就懂.