shadowsocks monitor https://blog.bingxuecandong.com/?p=199

shadowsocks-flow.sh

#!/bin/sh

# monit add : iptables -I OUTPUT -s 你的服务器IP -p tcp --sport 开放的端口
# show : iptables -n -v -L -t filter

#统计流量
flowname="/data/log/vpn/flow.log"
flownametail="/data/log/vpn/flow_tail.log"
flowregex="spt:端口起始到结尾"

date +"[%Y-%m-%d %H:%M:%S]" >> $flowname
iptables -n -v -L -t filter | egrep $flowregex | awk -F ' ' '{print $10 "\t" $2}' >> $flowname
iptables -n -v -L -t filter | egrep $flowregex | awk -F ' ' '{print $10 "\t" $2}' > $flownametail

shadowsocks-stats.sh

#!/bin/sh

# add to cron : * * * * * /home/shadowsocks/monitor.sh

#当前使用统计
filename="/data/log/vpn/monitor.log"
regex="你开放的端口起始与结尾"

date +"[%Y-%m-%d %H:%M:%S]" >> $filename
netstat -anp | egrep $regex | grep -E "tcp.*ESTABLISHED" | awk '{print $4, $5}' | cut -d: -f2 | sort -u >> $filename