Start the CISCO VPN client from the command line

start_vpn.expect

#!/usr/bin/env expect -f

# Start the CISCO VPN client on a Mac. Adapted from
# https://blog.felipe-alfaro.com/2014/05/23/automating-cisco-anyconnect-secure-mobility-client-on-mac-os-x/

set HOSTNAME vpn.server.com
set USER_NAME user.name
set PASSWORD password

spawn /opt/cisco/anyconnect/bin/vpn

expect {
  "state: Connected" { send disconnect\n ; exp_continue; sleep 3 }
  "state: Disconnected"  {sleep 2;send "connect $HOSTNAME\n"}
}

expect -timeout 60 -re "Username: .+] "; send $USER_NAME\n
expect "Password: " ; send $PASSWORD\n
expect "state: Connected"; sleep 2; send exit\n