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    #!/bin/bash
    procNumber=`/usr/bin/ps -ef|grep '/var/log/messages'|grep -v grep|wc -l`
    if [ $procNumber -eq 0 ]; then
        echo '>>/tmp/flat'
        nohup $(/usr/bin/tail -F /var/log/messages|awk '/out of memory/ {print $0;fflush()}'  >> /tmp/flag) & 
    else
       echo 'kill'
       pkill -9 tail && nohup $(/usr/bin/tail -F /var/log/messages|awk '/out of memory/ {print $0;fflush()}'  >> /tmp/flag) & 
    fi
    
    echo "while"
    while /usr/bin/inotifywait -e 'modify' /tmp/flag; do 
         echo "intifwait"
         /usr/sbin/ss -s  >> /alidata1/ss/ss-s.txt 
         /usr/sbin/ss  -ap >> /alidata1/ss/ss-ap.txt 
         /usr/sbin/ss -mp   >> /alidata1/ss/ss-mp.txt 
         /usr/sbin/ss -iep  >> /alidata1/ss/ss-iep.txt 
    
         /usr/bin/cat /proc/net/sockstat  >> /alidata1/ss/sockstat
         /usr/bin/cat  /proc/net/snmp >> /alidata1/ss/snmp
         /usr/bin/cat  /proc/net/dev  >> /alidata1/ss/dev
         procN=`/usr/bin/ps -ef |grep tcpdump |grep -v grep|wc -l`
         IP=$(hostname -i)
         echo "$procN---$IP"
         date=$(date +%s)
         if [ $procN -eq 0 ]; then  
           echo 'tcpdump'
           nohup $(/usr/sbin/tcpdump -i eth0 -s 0  -c 8000000   -K -n -w  /alidata1/tcpdump/${IP}_${date}-sniffer.cap) & 
        fi
    done
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  • 原文地址:https://www.cnblogs.com/gavin11/p/15108162.html
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