一个简单的MySQL备份Shell脚本

#!/bin/bash#this is a script of mysql/' target='_blank'>mysql backup if [ ! -d /mydata/data1/backup ] ;then  mkdir /mydata/data1/backupficd /mydata/data1/backupfile=$(find . -type f -mtime -7 | grep .*all.sql)  #查找7天内是否有备份的文件echo $fileif [ -z $file ] ;then  echo "backup all databases..." backupfile=$(date +%F-%H-%M-%S) MySQLdump -uroot --lock-all-tables --flush-logs --master-data=2 --all-databases > /mydata/data1/backup/"$backupfile-all.sql" if [ $? -eq 0 ] ;then echo "Accomplish,file is $backupfile-all.sql !" else  echo " Failure !!! " fielse                   #查找倒数第二大的二进制文件，作增量备份 cd .. echo "All database backups ,now start doing incremental backups!"    a=1     b=1     for file in $(ls |grep mysql-bin |grep -v index);do        num=$(echo $file |cut -d. -f2 )        if [ $num -gt $a ];then            a=$num        fi     done    unset num file    num=1      for file in $(ls |grep mysql-bin |grep -v index);do        num=$(echo $file |cut -d. -f2 )        if [ $num -gt $b -a $num -ne $a ] ; then            b=$num            tmp=$file        fi     done    file1=$(echo $tmp|cut -d. -f1)    file2=$(echo $tmp|cut -d. -f2)    mysqlbinlog $tmp > /mydata/data1/backup/"$file1-$file2.sql" if [ $? -eq 0 ] ;then  echo "Backup completed,file is "$file1-$file2.sql"" fifi

说明：此脚本每七天做一次完全备份，以后每天做一次增量备份，完全备份使用mysqldump客户端工具，增量备份使用mysqlbinlog备份其二进制日志文件。