mysql-5.5.25a安装：Installation of system tables failed解决办法

问题描述如下：

$：sudo ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql
Installing MySQL system tables...

Installation of system tables failed!  Examine the logs in
/var/lib/mysql for more information.

You can try to start the mysqld daemon with:

    shell> /usr/local/mysql/bin/mysqld --skip-grant &

and use the command line tool /usr/local/mysql/bin/mysql
to connect to the mysql database and look at the grant tables:

    shell> /usr/local/mysql/bin/mysql -u root mysql
    mysql> show tables

Try 'mysqld --help' if you have problems with paths.  Using --log
gives you a log in /var/lib/mysql that may be helpful.

Please consult the MySQL manual section
'Problems running mysql_install_db', and the manual section that
describes problems on your OS.  Another information source are the
MySQL email archives available at http://lists.mysql.com/.

Please check all of the above before mailing us!  And remember, if
you do mail us, you MUST use the /usr/local/mysql/scripts/mysqlbug script!

解决办法其实很简单，摸索了半天，才发现

$ sudo ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data

即添加一个参数就可以了。。。。。