用户名: 密码: 忘记密码? 注册

完全和差分备份的自动化模型

作者:  时间: 2010-10-15
下面提供了一个简单的脚本文件来作为一个同时实现完全和差分备份的自动化模型。在使用该脚本以前,请注意检查脚本头定义的环境变量以满足自己的需要。

#!/bin/sh
  #
  #######################################
  #
  # TAR backup script to cover daily and weekly backups on one tape.
  # Generic UNIX version - edit variables as required
  #
  # For this to work, it MUST be started on a Monday!
  #
  # Copyright (c) 1999, Tim Jones
  # Permission granted for use/modification
  #
  # Tim Jones/Linux Magazine provide this shell script with no warranty
  # (implied or otherwise)
  #
  ########################################

  DOW=`date +%w`
  DATE=`date +%D`
  DAY=`date +%A`
  DEVICE="MY REWIND TAPE" # Rewinding tape drive
  NDEVICE="MY NO_REWIND TAPE" # non-rewinding tape drive
  REWIND="mt -f $DEVICE rewind"
  EOD="mt -f $NDEVICE eod"
  FSF="mt -f $NDEVICE fsf"
  MAILLIST="root" # list of users to receive backup notice

  if [ $DOW = "6" ]
  then
  # This is Saturday, so append and write the whole system!
  $EOD
  echo $DATE > /tmp/.LASTFULL
  tar -cvvf $NDEVICE / >/tmp/backup.txt
  $REWIND
  $FSF 5
  tar -dvf $NDEVICE >> /tmp/backup.txt
  $REWIND
  cp /tmp/.LASTFULL /etc/.LASTFULL
  else
  # this is not Saturday
  case $DOW in
  0)
  # it's Sunday - nothing to do
  exit 0
  ;;
  1)
  # Monday, Let the tape rewind for the difference verification
  echo $DATE > /tmp/.LASTINC
  tar -cvvf $DEVICE --newer `cat /etc/.LASTFULL` / >/tmp/backup.txt
  cp /tmp/.LASTINC /etc/.LASTINC
  ;;
  *)
  # Other Days, must rewind manually and Inspect, -i
  $EOD
  echo $DATE >/tmp/.LASTINC
  tar -cvvf $NDEVICE --newer `cat /etc/.LASTINC` / >/tmp/backup
  $REWIND
  $FSF `expr $DOW - 1`
  echo "************ Verifying ${DAY}'s backup" >> /tmp/backup.txt
  tar --dvf $NDEVICE >> /tmp/backup.txt
  cp /tmp/.LASTINC /etc/.LASTINC
  $REWIND
  esac
  fi
  mail $MAILLIST < /tmp/backup.txt
  rm -f /tmp/backup.txt
  # END OF SCRIPT