restart process if down on openwrt

openwrt_process_watchdog.sh

cnt=`ps | grep "kcptun" | grep -v "grep" | wc -l`
if [ $cnt -eq 0 ];then
    /usr/bin/kcptun-client -c /var/etc/kcptun/client.general.json
    echo "restart kcptun service at `date`" >> /root/check.log
else
    echo "$cnt kcptun service on at `date`"
fi

# add this line to cron with `crontab -e`
# * * * * * /root/openwrt_process_watchdog.sh