使用shell编写九九乘法表，mysql分库备份

打印99乘法表：
#!/bin/bash
for num in `seq 9`
do
for num1 in `seq 9`
do
if [ $num -ge $num1 ]; then
if ((($num*$num1))>9)
then
echo -ne "${num}x${num1}=$(($num*$num1))\t"
else
echo -ne "${num}x${num2}=$(($num*$num1))\t"
fi
fi
done
echo -ne "\n"

done

#!/bin/bash
export LANG="zh_CN.UTF-8"
PATH=/usr/local/mysql/bin:$PATH
#user=root
#passwd=123456
backup=/tmp/backup
sock=/var/lib/mysql/mysql.sock
#comm="mysql -uroot -e "create database $dbname""
[ ! -d $backup ] && mkdir $backup

for dbname in a b c
do
echo "创建dbname$dbname"
mysql -uroot -S $sock -e "create database $dbname"
echo "开始备份$dbname"
mysqldump -uroot -S $sock $dbname | gzip >> $backup/"$dbname"_$(date +%F).sql.gz
done