8. Ownerships and Permissions
From the beginning, Linux was designed to be a multiuser system (unlike Windows, which was originally designed as a single user OS, which is the source of much of its security problems even to this day). This meant that different users would be active simultaneously on the system, creating files, deleting directories, and reading various items. To keep everyone from stepping on each other’s toes and damaging the underlying operating system itself, a scheme of permissions was created early on. Mastering the art of Linux permissions will aid you as you use your Linux box, whether it’s a workstation used by one person or a server accessed by hundreds. The tools are simple, but the power they give you is complex. Time ...
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