用 mysql -e 生成结果导入指定文件时:
  ● 若要同时显示语句本身:-v
  ● 若要增加查询结果行数:-vv
  ● 若要增加执行时间:-vvv
  在一些监控脚本中可以用来简化代码
  [plain]
  ㈠ 不带 v 测试:
  [mysql@even ~]$ mysql -uroot -poracle -e "SELECT VERSION();SELECT NOW()" > /home/mysql/test.sql
  [mysql@even ~]$ cat /home/mysql/test.sql
  VERSION()
  5.5.16-log
  NOW()
  2013-05-08 18:06:35
  ㈡ 带一个 v 测试
  [mysql@even ~]$ mysql -uroot -poracle -e  "SELECT VERSION();SELECT NOW()" -v  > /home/mysql/test02.sql
  [mysql@even ~]$ cat /home/mysql/test02.sql
  --------------
  SELECT VERSION()
  --------------
  VERSION()
  5.5.16-log
  --------------
  SELECT NOW()
  --------------
  NOW()
  2013-05-08 18:08:40
  ㈢ 带两个 v 测试
  [mysql@even ~]$ mysql -uroot -poracle -e  "SELECT VERSION();SELECT NOW()" -vv  > /home/mysql/test03.sql
  [mysql@even ~]$ cat /home/mysql/test03.sql
  --------------
  SELECT VERSION()
  --------------
  VERSION()
  5.5.16-log
  1 row in set
  --------------
  SELECT NOW()
  --------------
  NOW()
  2013-05-08 18:14:05
  1 row in set
  Bye
  ㈢ 带三个 v 测试
  [mysql@even ~]$ mysql -uroot -poracle -e  "SELECT VERSION();SELECT NOW()" -vvv  > /home/mysql/test04.sql
  [mysql@even ~]$ cat /home/mysql/test04.sql
  --------------
  SELECT VERSION()
  --------------
  +------------+
  | VERSION()  |
  +------------+
  | 5.5.16-log |
  +------------+
  1 row in set (0.00 sec)
  --------------
  SELECT NOW()
  --------------
  +---------------------+
  | NOW()               |
  +---------------------+
  | 2013-05-08 18:14:49 |
  +---------------------+
  1 row in set (0.00 sec)
  Bye
10-22 15:52