root@ubuntu:/# /etc/init.d/mysql stop   * Stopping MySQL database server mysqld                  [fail]root@ubuntu:/# sudo cat /var/run/mysqld/mysqld.pid  7680root@ubuntu:/# sudo kill 7680root@ubuntu:/# /etc/init.d/mysql stop   * Stopping MySQL database server mysqld                  [ OK ]

 

【参考自】：http://blog.csdn.net/blueskybluesoul/article/details/36658933