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参考 16.04 Distribution Upgrade - cannot start MySQL server,然后找到了16.04 upgrade broke mysql-server 我由 15.01升级到 16.04之后,无法启动mysql,以上方法解决了,而且数据库也还在~~ 备份你服务器中/etc/mysql下的 my.cnf 文件 和 删除或者重命名它. sudo mv /etc/mysql/my.cnf /etc/mysql/my.cnf.bak 删除不使用的/etc/mysq…

格林威治时间即UTC/GMT时间,1970年01月01日00时00分00秒(即UTC+8的北京时间1970年01月01日08时00分00秒)计算代码如下: /** * 获取指定时间到格林威治时间的秒数 * UTC:格林威治时间1970年01月01日00时00分00秒(UTC+8北京时间1970年01月01日08时00分00秒) * @param time * @return */ public static long diffSeconds(String time){ Calendar cale…

最近好久都没来网站上了,也没心思和时间去弄VellLock和升级V&View了.一直在蕴量这做一件大玩意. 最近一直都很忙,忙着做数电课设,还有各种实验,可是我的心思不在这些东西上,当然除了数电课设之外啦.因为我和喜欢硬件的,我我小时候就特别喜欢电器类的东西.所以在大学里面只要能碰上与硬件相关的东西我都是异常惊喜,在我这个计算机科学与技术专业想跟硬件打交道实在太难了.学校都是以软件为主的,除了基本的模电和数电外都没有别的了,最近在上的计算机组成原理可能还能算是一门硬件相关的课吧.数电课设我在另一…

Leetcode 542:01 矩阵 01 Matrix### 题目: 给定一个由 0 和 1 组成的矩阵,找出每个元素到最近的 0 的距离. 两个相邻元素间的距离为 1 . Given a matrix consists of 0 and 1, find the distance of the nearest 0 for each cell. The distance between two adjacent cells is 1. 示例 1: 输入: 0 0 0 0 1 0 0 0 0 输出…

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