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2.  ʹÓÃskip-grant-tablesÕâ¸öÑ¡ÏîÆô¶¯MySQL£º  /usr/bin/mysqld_safe --skip-grant-tables &
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    >   use mysql;
    >   UPDATE user SET password=password('123456') WHERE user='root'; //ÃÜÂëÐÞ¸ÄΪ123456;
    >  FLUSH PRIVILEGES;
    > quit;//Í˳ömysql
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