#!/usr/bin/expect

# connect to telnet port, press return and expect argv 2 (hostname) in
# prompt, press return again and expect to receive argv 2 again 

set timeout [lindex $argv 3]
spawn telnet [lindex $argv 0] [lindex $argv 1]
send "\r"
expect { 
  [lindex $argv 2]
}
send "\r"
expect { 
  [lindex $argv 2]
  { exit 0 }
}
exit 5