tcp连接数监控可用于存储维护中前端业务访问量的统计：使用命令netstat -anp
Proto：表示协议类型，Recv-Q：表示收包数量， Send-Q：表示发包数量
实战示例：
#!/bin/bash
#this script is used for count the quantity of session overstock
log=/ap/log/session_overstock_count.log
log_tmp=/ap/log/session_overstock_tmp.log
if [ ! -d "/ap/log" ];then
mkdir -p /ap/log
fi
netstat -anp | grep 2049 | grep "ESTABLISHED" | awk '{print $2}' > $log_tmp
sum=0
for i in `cat $log_tmp`;do
let sum=sum+i
done
echo "`date +%Y-%m-%d-%H:%M:%S` $sum" >> $log
/opt/product/zabbix/bin/zabbix_sender -c /opt/product/zabbix/conf/zabbix_agentd.conf -k "session_overstock_num" -o "$sum"
标签：tmp,shell,log,sum,tcp,ap,zabbix,连接数,overstock From： https://www.cnblogs.com/Albert-M/p/17671722.html