reconf authentication

#!/usr/bin/expect

# Set up various other variables here ($user, $password)
set timeout 15
set password "Cisco_123"
set f_read [open ./switches r]

# itarate over the switches
while {[gets $f_read device] != -1} {
   spawn telnet $device
   expect {
        timeout { continue }
        "Connection refused" {continue }
        "Username:" { continue }
        "Password:" { send "$password\r"; }
        "*>" { sleep 2 }
    }
   expect "*>"
   send "enable\r"
   expect "Password:"
   send "$password\r"
   expect "*#"
   send "copy tftp://192.168.200.199/reconf-auth.cfg running-config\r\r"
   expect "*#"
   sleep 5
   send "write\r"
   expect "*#"
   sleep 10
   send "logout\r"
   expect eof
}
# end