centos7-shell脚本判断fdfs掉线重启

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#!/bin/bash a=`netstat -unltp|grep fdfs_trackerd|wc -l` b=`netstat -unltp|grep fdfs_stroraged|wc -l`   echo "$a" if [ "$a" -ne "1" ];then     `fdfs_trackerd /etc/fdfs/tracker.conf start` fi echo "$b" if [ "$b" -ne "1" ];then     `fdfs_storaged /etc/fdfs/storage.conf start` fi