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Linux 用户身份与进程权限 - sparkdev
source link: https://www.cnblogs.com/sparkdev/p/9694103.html
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在学习 Linux 系统权限相关的主题时，我们首先关注的基本都是文件的 ugo 权限。ugo 权限信息是文件的属性，它指明了用户与文件之间的关系。但是真正操作文件的却是进程，也就是说用户所拥有的文件访
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