如题，我用应用中心安装了MYSQL，但是启动不了。后来用sshl连接用命令行启动，提示没操作权限，无法创建mysql.pid，sudo命令也没，也没root用户。admin权限不够怎么整呢？

/etc/profile: line 50: ulimit: open files: cannot modify limit: Operation not permitted
rm: can't remove '/mnt/database': Permission denied
mysql starting
start-stop-daemon: unable to open pidfile '/var/run/mysql.pid' for writing (Permission denied)
/etc/init.d/functions: line 611: /var/log/scripts.log: Permission denied

重置一下试试

用ssh工具以root身份登录，然后rm -rf 删除几处的Databases目录，重置MYSQL目录为有权限的目录就行了