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用于删除旧备份的脚本或实用程序

tag-icon • tag-icon windows backup batch
用于删除旧备份的脚本或实用程序

我正在为正在设置的 SharePoint 服务器创建备份策略。

每天都会进行备份。

从长远来看，我想保留：

  • 过去一周的每日备份。
  • 上个月的每周备份。
  • 去年的每月备份。
  • 每年备份。

如果我使用 bash/cygwin 编写脚本，我会发现编写脚本来清除此策略不需要的备份相当容易。但是我的 DOS 脚本编写技能非常初级，因此我很难处理这种事情。

想知道是否有其他人有我可以使用的类似脚本/实用程序。

干杯!

答案1

我最终编写了一个 bash 脚本来执行此操作。run-backup-maintenance.sh

使用示例：run-backup-maintenance.sh d7w4m12y10 /cygdrive/d/backup ".*.tar"

注意：所有每日备份必须写入：/cygdrive/d/backup/daily

如果使用参数 d7w4m12y10 运行，此脚本可确保随着时间的推移：

/cygdrive/d/backup/daily    will contain daily backups for the last 7 days
/cygdrive/d/backup/weekly   will contain weekly backups for the last 4 weeks
/cygdrive/d/backup/monthly  will contain monthly backups for the last 12 months
/cygdrive/d/backup/yearly   will contain yearly backups for the last 10 years

享受！

#!/bin/bash
die () {
    echo >&2 "$@"
    exit 1
}

[ "$#" -eq 3 ] || die "Usage run-backup.sh <options> <backupDir> <artefact>."$'\n'"3 arguments required, $# provided."$'\n'"Options should be given as d#w#m#y#, where # is a number denoting how long to keep the specified backup period."$'\n'"e.g. d7w4m12y10 says that backup will keep: 7 daily backups, 4 weekly backups, 12 monthly backups and 10 yearly backups."

#################################
#PROCESS PARAMETERS
backupDir=$2
artefactPattern=$3

regex="d\([0-9]*\)w\([0-9]*\)m\([0-9]*\)y\([0-9]*\)"
days=`echo $1 | sed "s/$regex/\1/g"`
weeks=`echo $1 | sed "s/$regex/\2/g"`
months=`echo $1 | sed "s/$regex/\3/g"`
years=`echo $1 | sed "s/$regex/\4/g"`

echo "Running backup in folder $backupDir against artefacts matching $artefactPattern keeping: $days days, $weeks weeks, $months months, $years years"

#################################
#YEARLY

if [ $years -ne 0 ]; then
    #Check that the yearly folder has a backup for the last 365 days
    fileListing=`find $backupDir/yearly -mtime -364 | grep "$artefactPattern"`
    if [ "$fileListing" == "" ]; then
        echo 'No files from last 365 days found, taking most recent daily backup...'
        cd $backupDir/daily/
        ls -t1 | grep "$artefactPattern" | head -n1 | xargs -t -I {} cp -r {} ../yearly/
        cd ../..
    else
        echo 'Yearly backup found, no copying required...'
    fi

    #Remove yearly backups older than x years
    find $backupDir/yearly -mtime +$(((years*365)-1)) | grep "$artefactPattern" | xargs rm -rf
fi

#################################
#MONTHLY

if [ $months -ne 0 ]; then
    #Check that the weekly folder has a backup for the last 30 days
    fileListing=`find $backupDir/monthly -mtime -29 | grep "$artefactPattern"`
    if [ "$fileListing" == "" ]; then
        echo 'No files from last 30 days found, taking most recent daily backup...'
        cd $backupDir/daily/
        ls -t1 | grep "$artefactPattern" | head -n1 | xargs -t -I {} cp -r {} ../monthly/
        cd ../..
    else
        echo 'Monthly backup found, no copying required...'
    fi

    #Remove monthly backups older than x months
    find $backupDir/monthly -mtime +$(((months*30)-1)) | grep "$artefactPattern" | xargs rm -rf
fi

#################################
#WEEKLY

if [ $weeks -ne 0 ]; then
    #Check that the weekly folder has a backup for the last 7 days
    fileListing=`find $backupDir/weekly -mtime -6 | grep "$artefactPattern"`
    if [ "$fileListing" == "" ]; then
        echo 'No files from last 7 days found, taking most recent daily backup...'
        cd $backupDir/daily/
        ls -t1 | grep "$artefactPattern" | head -n1 | xargs -t -I {} cp -r {} ../weekly/
        cd ../..
    else
        echo 'Weekly backup found, no copying required...'
    fi

    #Remove weekly backups older than X days
    find $backupDir/weekly -mtime +$(((weeks*7)-1)) | grep "$artefactPattern" | xargs rm -rf
fi

#################################
#DAILY

if [ $days -ne 0 ]; then
    #Remove daily backups older than X days
    find $backupDir/daily -mtime +$((days-1)) | grep "$artefactPattern" | xargs rm -rf
else
    find $backupDir/daily | grep "$artefactPattern" | xargs rm -rf
fi

答案2

在 cmd 或 powershell 中，有各种各样的方法可以本地执行此操作，但作为一种快速解决方案，请查看擦除临时文件. 将其与他们的脚本支持结合使用，您应该能够完成您想要做的事情。

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