使用expect自动登录

#!/usr/bin/expect -f
set ip [lindex $argv [expr $argc-1]]
set user yinzihao
set host $ip
set password pwd1
set bot_password pwd2
set timeout -1

spawn ssh $user@$host
expect {
    "es/no" { send "yes\r";exp_continue }
    "assword" { send "$password\r"}
}

expect "service" {send "su - bot\r"}
expect "assword" {send "$bot_password\r";interact}

expect eof