[Read from type] #Bash

press any key to continue

read -n1 -r -p "Press any key to continue..."

read_input.sh

echo
echo "Which protocol should OpenVPN use?"
echo "   1) UDP (recommended)"
echo "   2) TCP"
read -p "Protocol [1]: " protocol
until [[ -z "$protocol" || "$protocol" =~ ^[12]$ ]]; do
  echo "$protocol: invalid selection."
  read -p "Protocol [1]: " protocol
done
case "$protocol" in
  1|"") 
  protocol=udp
  ;;
  2) 
  protocol=tcp
  ;;
esac
echo
echo "What port should OpenVPN listen to?"
read -p "Port [1194]: " port
until [[ -z "$port" || "$port" =~ ^[0-9]+$ && "$port" -le 65535 ]]; do
  echo "$port: invalid port."
  read -p "Port [1194]: " port
done
[[ -z "$port" ]] && port="1194"