pptp.sh

lis=`netstat -pan|grep :1723|colrm 1 65|tr -d ' '/0-9a-z|grep LISTEN | uniq`

if [ $lis = 'LISTEN' ]
then
        echo 1

elif [ "$lis" != 'LISTEN' ]

then
        echo 2
fi

l2tp.sh


sil="`netstat -pan | grep :1701 | colrm 1 65 | tr -d ' '/0-9`"

if [ "$sil" != "xltpd" ]
then
        echo 2
else
        echo 1
fi
=================

Выполнение

vpn:/etc/zabbix# ./l2tp.sh
1
vpn:/etc/zabbix# ./pptp.sh
1