Centos7 增量备份数据脚本

#!bin/bash
#Automatic Backup Linux System Files
#By Author www.jfedu.net
#Define Variables
SOURCE_DIR=(
　　$*
)
TARGETDIR=/data/backup/
YEAR='date + %Y'
MONTH='date + %d'
WEEK='date + %u'
FILES=system_backuo.tgz
CODE=$?
if
　　[ -z $SOURCE_DIR]; then
echo -e "Please Enter a File or Directory You Need to Backup;\n------------------------------------------
----------------\nExample $0 /boot/etc ......"
　　exit
fi
#Determine Wether the Target Directory Exists
if
　　[! -d $TARGET_DIR/$YEAR/$MONTH/$DAY];then
　　mkdir -p $TARGET_DIR/$YEAR/$MONTH/$DAY
　　echo "This $TARGET_DIR Created Successfully!"
fi
#EXEC Full_Backup Function Command
　　Full_Backup()
{
if　
　　["$WEEK" -eq "7"];then
　　rm -rf $TARGET_DIR/snapshot
　　cd $TARGET_DIR/$YEAR/$MONTH/$DAY ; TAR -g $TARGET_DIR/snapshot -czvf $FILES 'echo ${SOURCE_DIR[@]}'
　　["$CODE" == "0"]&&echo -e " -----------------------------------------------------------------------
　　-\nFull_Backup System Files Backup Successfully!"
　　fi
}
#Perform incremental BACKUP Function Command
Add_Backup()
{
　　cd $TARGET_DIR/$YEAR/$MONTH/$DAY;
if 
　　[ -f $TARGET_DIR/$YEAR/$MONTH/$DAY/$FILES];then
　　read -p "$FILES Already Exists,overwrite confirmation yes or no ? : "SURE
　　if [$SURE == "no" -o $SURE == "n"];then 
　　sleep 1 ; exit 0
　　fi
#Add_Backup Files System
　　if
　　　　[$WEEK -ne "7" ];then
　　　　cd $TARGET_DIR/$YEAR/$MONTH/$DAY ; tar -g $TARGET_DIR/snapshot -czvf $ $_$FILES
　　'echo ${SOURCE_DIR[@]}'
　　　　["$CODE" =="0"]&&echo -e "--------------------------------------------------------
　　-\nAdd_Backup System Files Backup Successfully !"
　　　　fi
　　else
　　　　if 
　　　　　　[ $WEEK -ne "7"];then
 　　　　　　cd $TARGET_DIR/$YEAR/$MONTH/$DAY ; tar -g $TARGET_DIR/snapshot -czvf $FILES 'echo $
　　{SOURCE_DIR[@]}'
　　　　　　["$CODE" == "0"]&&echo -e "--------------------------------------------------------
　　-\nAdd_Backup System Files Backup Successfully !"
　　　　fi
　　fi
}
Full_Backup;Add_Backup