auto login different hosts using expect

auto-login.sh

#!/usr/bin/expect -f
array set d {
    141 "abc"
    142 "foobar"
    145 "buz"
}

if { $argc != 1 } {
    puts "usage: $argv0 HOST"
    puts "HOST can be 195 or 201"
    return
}

set host [lindex $argv 0]
puts "host is: $host"
set password $d($host)
set timeout -1
spawn ssh root@192.168.0.$host
expect "*?assword:*"
send "$password\r"
interact