过查看文件的权限位 ( permission bits)。 如果你的系统使用访问控制列表 (Access Control Lists(ACLs)), 则这些测试就使用它 。
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execution permission bit [计] 执行允许位
Now, the ACL is defined to give the root user read, write, and execute permissions, but not the deletion (that is, the "d") permission bit.
现在,ACL 已定义成赋予根用户读、写和执行权限,但没有删除权限位(即 “d”)。
Nearly every modern OS makes use of a bit-masking permission-based model that deals with the control of resources by principals, based on principals and groups.
几乎每个现代操作系统都使用基于位屏蔽权限的模型,该模型基于主体和组按主体处理资源控制。
This is far from being a full solution, as it is a bit experimental and relies on less-than-desirable permission settings, but you can see that such a task is possible.
当然,这远非一个完整的解决方案,因为它是试验性的并且依赖于不甚理想的权限设置,但是您可以看出这类任务是可能的。
Remember that you can change it slightly by saying "Would you mind" to ask permission a little bit softer.
记住,你可以通过轻微变形,用“Would you mind”更委婉地请求许可。
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