db_user="root"     #本服务器用户名密码
db_passwd="root"  
db_host="192.168.64.137"   #本服务器地址
db_name="whp"  #需要备份数据库名称
# the directory for story your backup file.  
backup_dir="/backup"    #备份以后放入的文件路径
# date format for backup file (dd-mm-yyyy)  
time="$(date +"%Y-%m-%d-%H-%M-%S")"  
# mysql, mysqldump and some other bin's path  
MYSQL="/application/mysql/bin/mysql"  
MYSQLDUMP="/application/mysql/bin/mysqldump"  
GZIP="/bin/gzip"  
  
$MYSQLDUMP -u $db_user -h $db_host -p$db_passwd $db_name | $GZIP -9 > "$backup_dir/$db_name"_"$time.gz"

db_user="root"  
db_passwd="root"  
db_host="localhost"   
# the directory for story your backup file.  
backup_dir="/application/backup/"  
# date format for backup file (dd-mm-yyyy)  
time="$(date +"%H-%M-%S-%m-%d-%y")"  
# mysql, mysqldump and some other bin's path  
MYSQL="/application/mysql/bin/mysql"  
MYSQLDUMP="/application/mysql/bin/mysqldump"  
MKDIR="/bin/mkdir"  
RM="/bin/rm"  
MV="/bin/mv"  
GZIP="/bin/gzip"  
# check the directory for store backup is writeable   
test ! -w $backup_dir && echo "Error: $backup_dir is un-writeable." && exit 
# the directory for story the newest backup  
test ! -d "$backup_dir/backup.0/" && $MKDIR "$backup_dir/backup.0/"  
echo "Start to Backup...";  
# get all databases  
# don't backup information_schema、performance_schema  
all_db="$($MYSQL -u $db_user -h $db_host -p$db_passwd -Bse 'show databases')"  
all_db=${all_db//information_schema/};  
all_db=${all_db//performance_schema/};  
for db in $all_db  
do  
$MYSQLDUMP -u $db_user -h $db_host -p$db_passwd $db | $GZIP -9 > "$backup_dir/backup.0/$time.$db.gz"  
done  
# delete the oldest backup  
test -d "$backup_dir/backup.7/" && $RM -rf "$backup_dir/backup.7"  
# rotate backup directory  
for int in 6 5 4 3 2 1 0  
do  
if(test -d "$backup_dir"/backup."$int")  
then  
next_int=`expr $int + 1`  
$MV "$backup_dir"/backup."$int" "$backup_dir"/backup."$next_int"  
fi  
done  
echo "BackUp Success!"  
exit 0;

       # chmod 700 mysql-backup.sh  // 只允许管理员运行此脚本
           #./mysql-backup.sh                //执行脚本，测试一次

#执行mysqladmin执行刷新日志文件         
/application/mysql/bin/mysqladmin -uroot -proot flush-logs   
         
#DATADIR=/var/lib/mysql   
DATADIR=/application/data  #获取数据文件路径 
BAKDIR=/backup    #获取要备份的数据目标文件路径
         
###如果mysql bin log你做了特殊设置,请修改此处或者修改应用此变量的行:缺省取机器名,mysql缺省也是取机器名   
#HOSTNAME=`uname -n`   
cd $DATADIR   #转入到/application/data 查询mysql-bin.index文件
#FILELIST=`cat $HOSTNAME-bin.index`   
 FILELIST=`cat mysql-bin.index`   
 
## COUNTER number   
COUNTER=0   
for file in $FILELIST   
do   
COUNTER=`expr $COUNTER + 1 `   
done   
         
NextNum=0   
for file in  $FILELIST   
do   
base=`basename $file`   
NextNum=`expr $NextNum + 1`   
if [ $NextNum -eq $COUNTER ]   
then
echo "skip lastest"
else
dest=$BAKDIR/$base   
if(test -e $dest)   
then
echo "skip exist $base"
else
echo "copying $base"
cp $base $BAKDIR   
fi   
fi   
done   
         
echo "backup mysql binlog ok"

# chmod 700 incre-backup.sh  // 只允许管理员运行此脚本
  #./mysql-backup.sh                //执行脚本，测试一次

 # crontab –e
添加：
00 01 * * */mysql-backup.sh    // 每天凌晨1点执行