shell日志删除（超容量&自动）

背景：避免双十一磁盘被打爆，本想通过crontab执行，但是删除需要密码，所以用作当机器磁盘高于摸个阈值，进行无关性日志强删

#!/bin/sh
#use
#sh  clean.sh  wmporder_prehost 38（说明：磁盘超过38%，则进行删除日志）

pgm -A `armory -leg $1` 'df -h' > alldf.log
cat alldf.log | grep -A2 "SUCCESS" > onedf.txt
pre=$2
index=0
ip=""
cat onedf.txt | while read line
do
    #get one size
    succ=`[[ $line =~ "SUCCESS" ]] && echo "1" || echo "0"`
    if [ $succ -eq 1 ];then
        index=1
        ip=`echo $line | awk '{print $4}'`
    else
        (( index++ ))
    fi

    if [ $index -eq 3 ];then
        echo $line | awk '{print $5}' | awk -v var=$pre -v ip=$ip -F '%' '{if($1>var) {print ip}}' >> overload.txt
    fi

done
rm -rf alldf.log onedf.txt

echo `cat  overload.txt`

if [ ! -f "overload.txt" ];then
   echo "文件不存在"
else
   pgm -A -b -p 10 -f  overload.txt 'sudo -u admin  rm -rf  /home/admin/*/logs/*/metaq/*'
   echo "delete"
fi
rm -rf overload.txt