#!/bin/bash
            #This is a ShellScript For Auto DB Backup
            #Powered by aspbiz
            #2004-09
            #Setting
            #设置数据库名，数据库登录名，密码，备份路径，日志路径，数据文件位置，以及备份方式
            #默认情况下备份方式是tar，还可以是mysqldump,mysqldotcopy
            #默认情况下，用root(空)登录mysql数据库，备份至/root/dbxxxxx.tgz
            DBName=mysql
            DBUser=root
            DBPasswd=
            BackupPath=/root/
            LogFile=/root/db.log
            DBPath=/var/lib/mysql/
            #BackupMethod=mysqldump
            #BackupMethod=mysqlhotcopy
            #BackupMethod=tar
            #Setting End
            NewFile="$BackupPath"db$(date +%y%m%d).tgz
            DumpFile="$BackupPath"db$(date +%y%m%d)
            OldFile="$BackupPath"db$(date +%y%m%d --date='5 days ago').tgz
            echo "-------------------------------------------" >> $LogFile
            echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile
            echo "--------------------------" >> $LogFile
            #Delete Old File
            if [ -f $OldFile ]
            then
            rm -f $OldFile >> $LogFile 2>&1
            echo "[$OldFile]Delete Old File Success!" >> $LogFile
            else
            echo "[$OldFile]No Old Backup File!" >> $LogFile
            fi
            if [ -f $NewFile ]
            then
            echo "[$NewFile]The Backup File is exists,Can't Backup!" >> $LogFile
            else
            case $BackupMethod in
            mysqldump)
            if [ -z $DBPasswd ]
            then
            mysqldump -u $DBUser --opt $DBName > $DumpFile
            else
            mysqldump -u $DBUser -p$DBPasswd --opt $DBName > $DumpFile
            fi
            tar czvf $NewFile $DumpFile >> $LogFile 2>&1
            echo "[$NewFile]Backup Success!" >> $LogFile
            rm -rf $DumpFile
            ;;
            mysqlhotcopy)
            rm -rf $DumpFile
            mkdir $DumpFile
            if [ -z $DBPasswd ]
            then
            mysqlhotcopy -u $DBUser $DBName $DumpFile >> $LogFile 2>&1
            else
            mysqlhotcopy -u $DBUser -p $DBPasswd $DBName $DumpFile >>$LogFile 2>&1
            fi
            tar czvf $NewFile $DumpFile >> $LogFile 2>&1
            echo "[$NewFile]Backup Success!" >> $LogFile
            rm -rf $DumpFile
            ;;
            *)
            /etc/init.d/mysqld stop >/dev/null 2>&1
            tar czvf $NewFile $DBPath$DBName >> $LogFile 2>&1
            /etc/init.d/mysqld start >/dev/null 2>&1
            echo "[$NewFile]Backup Success!" >> $LogFile
            ;;
            esac
            fi
            echo