adsl掉线自动重拨并减少重复报警次数

#!/bin/bash
#
PF=0
while true
do
touch /tmp/reppoe.txt
PPP=`ifconfig -a | grep -o ppp`
PING=` ping -c 4 www.baidu.com 2>&1 | grep ttl | wc -l`
LINE=`cat /tmp/reppoe.txt | wc -l`
if [ "$PPP" != 'ppp' ] || [ "$PING" -eq 0 ];then
echo "`date` pppoe is down" >> /tmp/reppoe.txt
if [ $LINE -gt 20 ]; then
echo "pppoe is dowm " | mail -s "pppoe is down" mailaddr && PF=1
true > /tmp/reppoe.txt
fi
adsl-start;
PING2=` ping -c 4 www.baidu.com 2>&1 | grep ttl | wc -l`
if  [ $PING2 != 0 -a  $PF != 0 ];then
IP=`LC_ALL=C ifconfig | grep -P -A2 "ppp" | grep 'inet addr' | cut -d: -f2  | awk '{ print $1}'  `
echo "pppoe is up and ip is $IP" | mail -s "pppoe is up" mailaddr && PF=0
fi
fi
sleep 10
done

#!/bin/bash
mfcount=0
while true
do
PPP=`ifconfig -a | grep -o ppp`
PING=` ping -c 4 www.baidu.com 2>&1 | grep ttl | wc -l`
[ "$PPP" != 'PPP' ] || [ "$PING" -eq 0 ]
status=$?
if [ $status != 1 ] ;then
mccount=`expr $mfcount + 1`
[  $mfcount -lt 1  -o  $mccount -gt 3  ] && echo "pppoe is down" | mail -s "pppoe is down"  mailaddr && mfcount=`expr $mfcount + 1`
ppstatus=1
while [ $ppstatus != 0 -o $PING = 0 ]
do
adsl-start;
ppstatus=$?
PING=` ping -c 4 www.baidu.com 2>&1 | grep ttl | wc -l`
if [ $PING != 0 ] ;then
echo ok && echo "pppoe is up and ip is $IP" | mail -s "pppoe is up" mailaddr && mfcount=0
fi
sleep 3
done
IP=`LC_ALL=C ifconfig | grep -P -A2 "eth0" | grep 'inet addr' | cut -d: -f2  | awk '{ print $1}'  `
fi
sleep 10
done