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#!/bin/sh umount /mnt/backup mount /dev/sdb1 /mnt/backup if [ `date +%d` = '01' ] #每月1號進行完全備份 then bakdir="/mnt/bak/daybak/month/"`date +%m%d` zl="" #進行完全備份 else backup_dir="/mnt/backup/"`date +%d` zl="-N "`date +'%Y-%m-01 00:00:01'`; #差異備份 #zl="-N "`date -d '-1 day' +'%Y-%m-%d 00:00:01'` #日增量備份 fi tar "${zl}" -czf ${backup_dir}/www.tgz /var/www umount /mnt/backup