login.exp

#!/usr/bin/expect
set host [lindex $argv  ]
set user [lindex $argv  ]
set password [lindex $argv  ]
set prompt [lindex $argv  ]
set timeout
spawn ssh -p  $user@$host
expect {
   "*yes/no*" {send "yes\r";exp_continue}
   "*assword:" {send "$password\r"}
}
interact