MySQL怎么增量备份

#!/bin/sh#author RuM#date 2015-07-10BAKDIR=/tmp/mysqlbak
BAKDIR_FULL=$BAKDIR/full
BAKDIR_ADD=$BAKDIR/add
CONF=/etc/my.cnf
passwd=123456
INNOBACKUPEX=/usr/bin/innobackupex

if [ -f "$INNOBACKUPEX" ]
    then        if  [ -d "$BAKDIR" ]
             then           echo "is ok"             else           mkdir $BAKDIR_FULL -p
           mkdir $BAKDIR_ADD -p
       fi

files=`ls $BAKDIR_FULL`
       if [ -z "$files" ]
           then               $INNOBACKUPEX  --defaults-file=$CONF  --user=root --password=$PASSWD  $BAKDIR_FULL               FULLNAME=$(dir "$BAKDIR_FULL")
               $INNOBACKUPEX  --defaults-file=$CONF  --user=root --password=$PASSWD --incremental-basedir=$BAKDIR_FULL/$FULLNAME/ --incremental $BAKDIR_ADD           else

               ADDNAME=$(ls -lt $BAKDIR_ADD |sed -n 2p|awk '{print $9}')
               $INNOBACKUPEX  --defaults-file=$CONF  --user=root --password=$PASSWD --incremental-basedir=$BAKDIR_ADD/$ADDNAME/ --incremental $BAKDIR_ADD       fi   else       echo "is not install innobackupex"fi