Linux如何使用shell脚本定时删除历史日志文件

1、tools目录文件结构

[root@www tools]# tree tools/
tools/
├── bin
│  ├── del_history_files
│ 
└── etc
  ├── del_history_files.cfg
 
2 directories, 2 files

2、删除历史文件脚本 del_history_files

[root@www tools]# more tools/bin/del_history_files
#!/bin/sh
 
# 删除指定目录下,文件时间早于指定时间节点的文件,时间粒度:小时
# 配置文件格式 : 需清理的目录=小时数
#
#
# define restricted path
PATH="/bin:/usr/bin:/sbin:/usr/sbin"
 
# adirname - return absolute dirname of given file
adirname() { odir=`pwd`; cd `dirname $1`; pwd; cd "${odir}"; }
 
 
# ---------
# constants
# ---------
MYNAM=`basename "$0"`
MYDIR=`adirname "$0"`
MYCFG="${MYDIR}/../etc/${MYNAM}.cfg"
MYTMP="${MYDIR}/../tmp"
MYLCK="${MYTMP}/${MYNAM}.lock"
 
# perform some locking (as good as it gets in a shell)
[ -s "${MYLCK}" ] && kill -0 `cat "${MYLCK}"` 2>/dev/null &&
    die "${MYNAM}: already running!"
echo "$$" > "${MYLCK}"
 
PATHS=(`cat ${MYCFG}`)
for PP in ${PATHS[@]}
do
  APP_PATH=`echo ${PP} | awk -F'=' '{print $1}'`
  N=`echo ${PP} | awk -F'=' '{print $2}'`
    if [ -d ${APP_PATH} ] ; then
    T=`/bin/date --date "${N} hours ago" "+%Y%m%d%H%M"`
    TMP_FILE="/tmp/`echo ${PP} | md5sum | awk '{print $1}'`"
    touch -t ${T} ${TMP_FILE}
    find ${APP_PATH} ! -newer ${TMP_FILE} -type f -print0 | xargs -0 -n 100 rm -rf
    find ${APP_PATH} -type d -empty -print0 | xargs -0 -n 100 rm -rf &> /dev/null
    fi
done
 
rm -rf ${MYLCK}

3、删除历史文件脚本的配置文件 del_history_files.cfg

[root@www tools]# more tools/etc/del_history_files.cfg
#需清理的目录=小时数
/home/logs/nginx=720
/home/logs/varnish=720

4、crontab 执行即可

[root@www tools]# more /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
#clear old logs
00 6 * * * root /home/tools/bin/del_history_files

1、tools目录文件结构

[root@www tools]# tree tools/
tools/
├── bin
│  ├── del_history_files
│ 
└── etc
  ├── del_history_files.cfg
 
2 directories, 2 files

2、删除历史文件脚本 del_history_files

[root@www tools]# more tools/bin/del_history_files
#!/bin/sh
 
# 删除指定目录下,文件时间早于指定时间节点的文件,时间粒度:小时
# 配置文件格式 : 需清理的目录=小时数
#
#
# define restricted path
PATH="/bin:/usr/bin:/sbin:/usr/sbin"
 
# adirname - return absolute dirname of given file
adirname() { odir=`pwd`; cd `dirname $1`; pwd; cd "${odir}"; }
 
 
# ---------
# constants
# ---------
MYNAM=`basename "$0"`
MYDIR=`adirname "$0"`
MYCFG="${MYDIR}/../etc/${MYNAM}.cfg"
MYTMP="${MYDIR}/../tmp"
MYLCK="${MYTMP}/${MYNAM}.lock"
 
# perform some locking (as good as it gets in a shell)
[ -s "${MYLCK}" ] && kill -0 `cat "${MYLCK}"` 2>/dev/null &&
    die "${MYNAM}: already running!"
echo "$$" > "${MYLCK}"
 
PATHS=(`cat ${MYCFG}`)
for PP in ${PATHS[@]}
do
  APP_PATH=`echo ${PP} | awk -F'=' '{print $1}'`
  N=`echo ${PP} | awk -F'=' '{print $2}'`
    if [ -d ${APP_PATH} ] ; then
    T=`/bin/date --date "${N} hours ago" "+%Y%m%d%H%M"`
    TMP_FILE="/tmp/`echo ${PP} | md5sum | awk '{print $1}'`"
    touch -t ${T} ${TMP_FILE}
    find ${APP_PATH} ! -newer ${TMP_FILE} -type f -print0 | xargs -0 -n 100 rm -rf
    find ${APP_PATH} -type d -empty -print0 | xargs -0 -n 100 rm -rf &> /dev/null
    fi
done
 
rm -rf ${MYLCK}

3、删除历史文件脚本的配置文件 del_history_files.cfg

[root@www tools]# more tools/etc/del_history_files.cfg
#需清理的目录=小时数
/home/logs/nginx=720
/home/logs/varnish=720

4、crontab 执行即可

[root@www tools]# more /etc/crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
#clear old logs
00 6 * * * root /home/tools/bin/del_history_files

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数据运维技术 » Linux如何使用shell脚本定时删除历史日志文件