three days backup

#!/bin/sh
# code backup by Jevons
# [email protected]
# 2008-10-25
BakDir=/usr/local/backup/allcode/
LogFile=/usr/local/backup/allcode/allcode.log
DATE=`date +%Y%m%d`
echo " " >> $LogFile
echo " " >> $LogFile
echo "-------------------------------------------" >> $LogFile
echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile
echo "--------------------------" >> $LogFile
nDATE=`date +%d`
BAKNAME=$[nDATE % 3].tar.gz
cd $BakDir
GZDumpFile=$BAKNAME
tar czvf $GZDumpFile /usr/local/apache2/htdocs/mall >> $LogFile 2>&1
scp   -P 22 $GZDumpFile [email protected]:/usr/local/backup/allcode
ls -al $BakDir >> $LogFile
echo "-----------------close----------" >> $LogFile
echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile
echo "----------------------close----" >> $LogFile