说明：需在脚本目录下创建文件log_arg.txt，第一列为日志路径，第二列日志名，第三列至少要保存的日志文件数量，第四列删除多少天之前的日志。

log_arg.txt 文件内容：

# first: log dir

# secound: log name

# third: log file not less than

# forth: delete log how many days ago 

/glassfish/dm02n02s02/dm02c03s02/logs server.log_\* 20 7

/glassfish/dm02n02s02/dm02c03s04/logs server.log_\* 20 7

脚本rm_log.sh内容：

#!/bin/bash

dn=`dirname $0`

cd $dn

awk '/^[^#]/' log_arg.txt | while read log

do 

    logarr=($log)

    len=${#logarr[@]}

    dir=${logarr[0]}

    fn=${logarr[1]}

    cnt=${logarr[2]}

    dt=${logarr[3]}

    if [ $len != 4 ]; then

        echo "Line \"$log\" is error"

        continue

    fi        

    [[ ! -d $dir ]] && echo "$dir is not exist" && continue

    [[ ! "$cnt" =~ ^[0-9]+$ ]] && echo "$cnt is not a number" && continue

    [[ ! "$dt" =~ ^[0-9]+$ ]] && echo "$dt is not a number" && continue

    acnt=`find $dir -type f -name $fn -ctime -$dt | wc -l`

    echo "$dir $acnt $cnt"

    if [ $acnt -ge $cnt ] ; then

        echo "Now delete $dt days ago logs in $dir. Log files $fn not less than $cnt."

        find $dir -type f -name $fn -ctime +$dt | xargs rm -f

    fi

done