linux expect 例子！

记住这个例子，以后就知道怎么用了

#!/usr/bin/expect -f
set ipaddress [lindex $argv 0]    //第一个参数，下面类推
set username [lindex $argv 1]
set password [lindex $argv 2]

spawn ftp $ipaddress              //程序开始spawn 是标志，后面是要执行的命令
expect "*Name*"                   //匹配字符
send "$username\n"                 //发送参数，
expect "*Password:*"
send "$password\n"
expect "*ok*ftp>*"
send "get test\n"                 //执行操作
expect "*ftp>*"
send "quit\n"
expect eof                       //OVER