参考来源：https://wiki.swoole.com/wiki/page/p-server/reload.html
shell代码：
echo "loading..." pid=$(pidof live) # pid= `pidof live` echo $pid kill -usr1 $pid echo "success loading..."
swoole--服务平滑重启
原文：https://www.cnblogs.com/laijinquan/p/12324625.html
