一个Shell小脚本精准统计Mysql每张表的行数实现

[root@shijiangeit ~]# mysql -h 127.0.0.1 -uxxx -pxxx -e "show databases;" 2>/dev/null
+--------------------+
| Database      |
+--------------------+
| information_schema |
| mysql       |
| performance_schema |
| shijiange     |
| test        |
| wordpress     |
+--------------------+

[root@shijiangeit ~]# mysql -h 127.0.0.1 -uxxx -pxxx -e "show databases;" 2>/dev/null |grep -v Database
information_schema
mysql
performance_schema
shijiange
test
wordpress

[root@shijiangeit ~]# for onedb in $(mysql -h 127.0.0.1 -uxxx -pxxx -e "show databases;" 2>/dev/null |grep -v Database);do
>  echo $onedb
>  mysql -h 127.0.0.1 -uxxx -pxxx $onedb -e "show tables" 2>/dev/null
> done
information_schema
+---------------------------------------+
| Tables_in_information_schema     |
+---------------------------------------+
| CHARACTER_SETS            |
| COLLATIONS              |
| COLLATION_CHARACTER_SET_APPLICABILITY |
| COLUMNS                |
| COLUMN_PRIVILEGES           |
| ENGINES                |
| EVENTS                |
| FILES                 |
| GLOBAL_STATUS             |
| GLOBAL_VARIABLES           |
| KEY_COLUMN_USAGE           |

[root@shijiangeit ~]# for onedb in $(mysql -h 127.0.0.1 -uxxx -pxxx -e "show databases;" 2>/dev/null |grep -v Database);do
>  for onetab in $(mysql -h 127.0.0.1 -uxxx -pxxx $onedb -e "show tables" 2>/dev/null |grep -v 'Tables_in_');do
>   onetablength=$(mysql -h 127.0.0.1 -uxxx -pxxx $onedb -e "select count(1) from $onetab" 2>/dev/null |grep -v 'count')
>   echo -e "$onedb.$onetab\t$onetablength"
>  done
> done
information_schema.CHARACTER_SETS  40
information_schema.COLLATIONS  219
information_schema.COLLATION_CHARACTER_SET_APPLICABILITY  219
information_schema.COLUMNS 1789
information_schema.COLUMN_PRIVILEGES  0
shijiange.logincount  4
shijiange.member  0
shijiange.user 2097153
test.detect_servers 0
wordpress.wp_commentmeta  0
wordpress.wp_comments  0
wordpress.wp_links 0
wordpress.wp_options  156

mysqlhost=127.0.0.1
mysqluser=xxx
mysqlpassword=xxx

for onedb in $(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword -e "show databases;" 2>/dev/null |grep -v Database);do
 for onetab in $(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword $onedb -e "show tables" 2>/dev/null |grep -v 'Tables_in_');do
  onetablength=$(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword $onedb -e "select count(1) from $onetab" 2>/dev/null |grep -v 'count')
  echo -e "$onedb.$onetab\t$onetablength"
 done
done

[root@shijiangeit ~]# for onedb in $(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword -e "show databases;" 2>/dev/null |grep -v Database);do
>  for onetab in $(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword $onedb -e "show tables" 2>/dev/null |grep -v 'Tables_in_');do
>   onetablength=$(mysql -h $mysqlhost -u$mysqluser -p$mysqlpassword $onedb -e "select count(1) from $onetab" 2>/dev/null |grep -v 'count')
>   echo -e "$onedb.$onetab\t$onetablength"
>  done
> done | sort -nrk 2
shijiange.user 2097153
information_schema.INNODB_BUFFER_PAGE  8191
performance_schema.events_waits_summary_by_thread_by_event_name 5320
information_schema.INNODB_BUFFER_PAGE_LRU  3453