Start/stop OpenVPN while tracking PID

vpndown.sh

#!/bin/bash

PID_FILE=~/run/openvpn.pid

if [ -e $PID_FILE ] && [ -s $PID_FILE ]; then
  pid=`cat $PID_FILE`;

  if [ ! "$(ps -eF | grep $pid | grep openvpn)" ]; then
    echo "It seems that OpenVPN is not running and was not shutdown cleanly, remove the file '$PID_FILE' before attepting to start."
    exit 1;
  fi

  echo "Stopping OpenVPN with PID: $pid";
  sudo kill $pid && rm $PID_FILE;
else
  echo "OpenVPN is not running."
fi

vpnup.sh

#!/bin/bash

PID_FILE=~/run/openvpn.pid

if [ -e $PID_FILE ] && [ -s $PID_FILE ]; then
  if [ "$(ps -eF | grep `cat $PID_FILE` | grep openvpn)" ]; then
    echo "It seems that OpenVPN is already running with PID $(cat $PID_FILE)";
    exit 1;
  else
    echo "It seems that OpenVPN was not shutdown cleanly, remove the file '$PID_FILE' and try to start again."
    exit 1;
  fi
fi

sudo openvpn --daemon --config ~/.config/openvpn/karlwilbur.ovpn
pid=`pidof openvpn`
echo $pid > $PID_FILE
echo "OpenVPN started with PID $pid"