可以配合for循环一起使用

#!/usr/bin/expect

if {argc<3} {
    puts "Usage:cmd <host> <username> <password>"
    exit 1
}

set timeout -1
set host [lindexargv 0] 
set username [lindex argv 1]
set password [lindexargv 2]

spawn ssh username@host

# expect "*password*" {send "password\r"}
expect {
    "*yes*no*" {
        send "yes\r"
        exp_continue
    }
    "*password*" {
        send "password\r"
        exp_continue
    }
    "*#*" {
        send "exit\r"
        exp_continue
    }
    eof
    {
        send "eof"
    }
}
interact