/etc/init.d/mysql?stop

?

/etc/init.d/mysql?start

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/etc/init.d/mysql?restart

?

重启提示错误如下：

?

Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service mysql start...

其实已经告诉怎么做了：用sudo service mysql start启动即可