MySQL Database backup small script

vim mysql.sh
#!/bin/bash
day= ' Date +%y-%m-%d '//date displayed and given day variable
size= ' du-sh/var/lib/mysql//view MySQL size and assign variable sizes
echo "Date: $DAY" >>/tmp/mysqlbak.txt//Output date to Mysqlbak.txt file
echo "Date size: $SIZE" >>/tmp/mysqlbak.txt//output file size to Mysqlbak.txt file
cd/tmp/mysql//switch to MySQL directory
tar ZCVF mysqlbak-${day}.tar.gz/var/lib/mysql/tmp/mysqlbak.txt//package MySQL database file and date size file
rm-rf/tmp/mysql.txt//delete mysqlbak.txt store mysql data size file