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为什么我是所属组，且所属组有对该文件的所有权限，我还是不能够对文件进行相关的操作呢？因为系统的角色匹配结构是 if-else if - else 结构，而不是 if-if-if 结构。只要前面的角色匹配上了，就只能拥有该角色对该文件的权限，无法拥有其他角色对该文件的权限。其实如果 Linux 系统采...

【Linux】shell 及权限理解（上）

👉shell命令以及运行原理👈其实，我们平时敲的指令都是可执行程序，都是用 C语言或 C++ 代码写的。那这些指令是什么在 shell 上运行起来的呢？shell 又是什么呢？Linux 严格意义上说的是一个操作系统，我们称之为“核心(kernel)” 。但我们一般用户ÿ...

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[帮助文档] Linux系统的Shell命令如何查看实例的系统配置

通过云助手，您无需逐一登录ECS实例进行运维操作，只需编写可以查询系统配置的云助手命令，并根据系统返回信息做出应对机制，例如是否继续下载或者更新软件。本文以适用于Linux系统的Shell命令为例，介绍如何查看实例的系统配置。

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更新时间 2023-04-13 09:59:15

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