vpnup

#!/bin/sh
### BEGIN INIT INFO
# Provides: vpnup
# Required-Start: $all
# Required-Stop: $network $local_fs $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: SoftEther VPN Client 
# chkconfig: 2345 99 1
# description: SoftEther VPN Client
### END INIT INFO

#
VPNCPATH="/usr/local/vpnclient/vpnclient"
VPNCUP=`pgrep vpnclient | wc -l`
VDEV="vpn_rpi3"
VPNinet="192.168.30.40/24"

#check vpnclient command.
test -x $VPNCPATH || exit 0

#echo $VPNCUP
#
case "$1" in
   start)
      if [ $VPNCUP = 0 ]; then
         $VPNCPATH start
         VNIC=`ip -4 -o addr | grep vpn_ | wc -l`

         echo -n "waiting for startup virtualnic..."
         
         while [ $VNIC = 0 ]
         do
            echo -n "."
            sleep 1
            VNIC=`ip -4 -o addr | grep vpn_ | wc -l`
         done

         ip a add $VPNinet dev $VDEV

         echo "ok."

      else
         echo "VPN Client has started"
         exit 1
      fi
   ;;
   stop)
      if [ $VPNCUP = 0 ]; then
         echo "VPN Client has stopped"
         exit 1
      else
         $VPNCPATH stop
      fi
   ;;
   restart)
      $0 stop
      sleep 3
      $0 start
   ;;
   *)
   echo "Usage: $0 {start|stop|restart}"
   exit 1
esac

exit 0