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  ] ; then
 fragmentation=$(($datafree *  / $datalength))
 echo "$database.$name is $fragmentation% fragmented."
 fi
 done
 done

运行结果：

jinyuanbao.mk_activity_shop is % fragmented.
jinyuanbao.mk_coupon is % fragmented.
jinyuanbao.mk_dispatch_coupon is % fragmented.
jinyuanbao.mk_first_order is % fragmented.
jinyuanbao.notice is % fragmented.
jinyuanbao.open_oauth is % fragmented.
jinyuanbao.order_platform_activity_map is % fragmented.
jinyuanbao.payway is % fragmented.
jinyuanbao.profile_info is % fragmented.
jinyuanbao.push_info is % fragmented.
jinyuanbao.push_tag is % fragmented.
jinyuanbao.relation_notice is % fragmented.
jinyuanbao.return_condition is % fragmented.
jinyuanbao.sec_level_domain is % fragmented.
jinyuanbao.sendsms is % fragmented.
jinyuanbao.shop_category is % fragmented.
jinyuanbao.shop_customer is % fragmented.
jinyuanbao.shop_goods is % fragmented.