Password is not supplied for ssh login

Question

I'm trying to login to a remote host using expect & spawn. While automating this it's going till ssh username@host.example.com and password prompt came and it is terminating wihtout supplying the password. What is wrong with this script ?

#!/usr/bin/expect
set timeout 9
passwrd=PASSWORD
username=USER_NAME
host=host.example.com

/usr/bin/expect << EOF

spawn ssh $username@$host
expect "Password:"
send "$passwrd\r"
interact

Answer 1

You're confusing expect syntax and shell syntax. You want:

#!/usr/bin/expect
set timeout 9
set passwrd PASSWORD
set username USER_NAME
set host host.example.com

spawn ssh $username@$host
expect "Password:"
send "$passwrd\r"
interact