diff -pNaru10 a/script/advman b/script/advman
--- a/script/advman	2023-01-04 00:01:44.519381965 -0500
+++ b/script/advman	2023-01-04 00:05:51.579295372 -0500
@@ -1,134 +1,35 @@
 #!/bin/bash
 
 set -u
 if [ "${EUID}" -ne 0 ]; then
   echo "Must be root"
   exit 1
 fi
 
-COMMAND=0
-SCRIPT=$0
-INSTALLPATH=/usr/share/advtty
-DEAMON=advttyd
-SERVICE=vcomd
-DRIVER=advvcom
-CONFIGFILE=/etc/advttyd.conf
-DEAMONFILE=$INSTALLPATH/$DEAMON
-#DKMSFILE=/lib/modules/$(uname -r)/updates/dkms/$DRIVER.ko
-#KERNEL=$(uname -r|cut -c1-3)
-if false # [ $KERNEL = "2.4" ]
-then
-DRIVERFILE=$INSTALLPATH/$DRIVER.o
-else
-DRIVERFILE=$DRIVER
-fi
-
-RETURN=
 OBJECTIVE=
 
-hasdriver()
-{
-	COUNT=$(lsmod | grep $DRIVER -c)
-	if [ $COUNT -gt 0 ]
-	then
-		echo "kernel moduel $DRIVER.ko detected..."
-		RETURN=1
-	else
-		echo "kernel moduel $DRIVER.ko not installed... try objective \"insert\" first"
-		RETURN=0
-	fi
-}
-
-insdriver()
-{
-	if false # [ $KERNEL = "2.4" ]
-	then
-	echo "inserting kernel moduel $DRIVER.o ..."
-	modprobe $DRIVERFILE
-	elif [ -e $DRIVERFILE ]
-	then
-	echo "inserting kernel module $DRIVER.ko ..."
-	modprobe $DRIVERFILE
-	else
-	echo "inserting DKMS moduel $DRIVER ..."
-	modprobe $DRIVER
-	fi
-}
-
-rmdriver()
-{
-	if false # [ $KERNEL = "2.4" ]
-	then
-	echo "removing kernel moduel $DRIVER..."
-	rmmod $DRIVER
-	else
-	echo "removing kernel moduel $DRIVER.ko..."
-	rmmod $DRIVER.ko
-	fi
-}
-
-stopService()
-{
-	echo "stoping all local services..."
-	killall -s 9 $SERVICE
-}
-
-startDeamon()
-{
-	# for 2.4.x kernel, we should make node by myself
-	if false # [ $KERNEL = "2.4" ]
-	then
-		i=1
-		while [[ $i -le 256 ]]
-		do
-			if [ -z $(awk '$2=="vttyAP"{print $1}' /proc/devices) ]
-			then
-				mknod /dev/vttyAP$i c $(awk '$2=="vttyap/%d"{print $1}' /proc/devices) $i
-			else
-				mknod /dev/vttyAP$i c $(awk '$2=="vttyAP"{print $1}' /proc/devices) $i
-			fi
-			((i = i + 1))
-		done
-	fi
-	echo "invoking local deamon..."
-	install -m 700 -oroot -groot -d /tmp/advmon
-	$DEAMONFILE -d -w ${INSTALLPATH}
-
-}
-
-stopDeamon()
-{
-#	killall -s 9 $DEAMON
-	if false # [ $KERNEL = "2.4" ]
-	then
-        	rm -rf /dev/vttyAP*
-	fi
-
-}
-
-
 usage()
 {
 cat << EOF
 usage: $0 options
 
 This script lists helps you manage local advtty service.
 
 OPTIONS:
    -h      Show this message
    -o	   Execute objective:
    		start 	- start advtty local service
 		stop 	- stop advtty local service
 		restart	- restart advtty local service
-		insert	- insert $DRIVER.ko module
-		remove	- remove $DRIVER.ko module
+		insert	- insert module
+		remove	- remove module
 
 Example:
 	$0 -o start
 	$0 -o restart
 	$0 -o stop
 
 EOF
 }
 
 while getopts 'ho:' OPTION
@@ -143,57 +44,34 @@ do
              ;;
          ?)
 	     usage
              exit
              ;;
      esac
 done
 
 case $OBJECTIVE in
 	start)
-		hasdriver
-		if [ $RETURN -eq 1 ]
-		then
-			echo "starting service...."
-			startDeamon
-		else
-			echo "installing driver & start service..."
-			insdriver
-			startDeamon
-		fi
+		systemctl start 'advtty-vcom.service'
 		exit 0
 	;;
 	restart)
-		hasdriver
-		if [ $RETURN -eq 1 ]
-		then
-			stopService
-			echo "starting service...."
-			startDeamon
-		else
-			echo "can not start service..."
-			insdriver
-			startDeamon
-		fi
+		systemctl reload 'advtty-vcom.service'
 		exit 0
 
 	;;
 	stop)
-		echo stop
-		stopService
-		stopDeamon
+		systemctl stop 'advtty-vcom.service'
 		exit 0
 	;;
 	insert)
-		insdriver
+		modprobe 'advvcom'
 		exit 0
 	;;
 	remove)
-		stopService
-		stopDeamon
-		rmdriver
+		systemctl stop 'advtty-vcom.service'
 		exit 0
 	;;
 esac
 usage