代码：
./bin/mysqladmin -r -i 1 -uroot -p1234 ext| awk '/Queries/{printf("QPS:%d
",$4)}/Threads_connected/{printf("Threads_connected:%d
",$4)}/Threads_running/{printf("Threads_running:%d
",$4)}'执行结果：
参考文章：
http://www.orczhou.com/index.php/2014/03/some-tricky-about-mysqladmin-extended-status/