copy ssh public key to machine

ssh-copy-id.exp

#!/usr/bin/expect -f

set timeout 5
set user [lindex $argv 0]
set host [lindex $argv 1]
set password [lindex $argv 2]

spawn ssh-copy-id $user@$host
expect {
   "*yes/no" { send "yes\r";exp_continue }
   "*password:" { send $password; send "\r" }
   "if you think this is a mistake, you may want to use -f option" {exit}
}

expect eof