检查mysql表碎片化脚本

#!/bin/sh

echo -n "MySQL username: " ; read username
echo -n "MySQL password: " ; stty -echo ; read password ; stty echo ; echo

mysql -u $username -p"$password" -NBe "SHOW DATABASES;" | grep -v 'lost+found' | while read database ; do
mysql -u $username -p"$password" -NBe "SHOW TABLE STATUS;" $database | while read name engine version rowformat rows avgrowlength datalength maxdatalength indexlength datafree autoincrement createtime updatetime checktime collation checksum createoptions comment ; do
if [ "$datafree" -gt 0 ] ; then
fragmentation=$(($datafree * 100 / $datalength))
echo "$database.$name is $fragmentation% fragmented."
fi
done
done

运行结果：

jinyuanbao.mk_activity_shop is 263% fragmented.
jinyuanbao.mk_coupon is 113% fragmented.
jinyuanbao.mk_dispatch_coupon is 263% fragmented.
jinyuanbao.mk_first_order is 88% fragmented.
jinyuanbao.notice is 159% fragmented.
jinyuanbao.open_oauth is 159% fragmented.
jinyuanbao.order_platform_activity_map is 113% fragmented.
jinyuanbao.payway is 4% fragmented.
jinyuanbao.profile_info is 159% fragmented.
jinyuanbao.push_info is 5% fragmented.
jinyuanbao.push_tag is 21% fragmented.
jinyuanbao.relation_notice is 25% fragmented.
jinyuanbao.return_condition is 46% fragmented.
jinyuanbao.sec_level_domain is 159% fragmented.
jinyuanbao.sendsms is 2% fragmented.
jinyuanbao.shop_category is 59% fragmented.
jinyuanbao.shop_customer is 88% fragmented.
jinyuanbao.shop_goods is 0% fragmented.