my_print_defaults: command not found

重启mysql服务报如下错误mysql版本5.5.8：

#  /etc/init.d/mysqld restart
/etc/init.d/mysqld: line 256: my_print_defaults: command not found
/etc/init.d/mysqld: line 256: my_print_defaults: command not found
MySQL server PID file could not be found!                  [FAILED]
/etc/init.d/mysqld: line 256: my_print_defaults: command not found
Starting MySQLCouldn't find MySQL server (./bin/mysqld_safe[FAILED]

解决办法：

编辑/etc/my.cnf 文件，因为缺少basedir 和 datadir 两个路径，在 [mysqld] 添加上即可
#vim /etc/my.cnf
[mysqld]
...........
...........
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data

保存退出，然后重新启动就可以