How the dot came into the UNIX file system

If you ever wondered why you are only a tolerated guest in your $HOME directory, you will find the story about the origin of the so called “hidden files” interesting:

Rob Pike on the Origin of Unix Dot File Names

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Heh. Like why there’s no “Windows 9”. It would crash many programs that tested if they were running on “Windows 9” only – to catch both Win 95 and 98. (Markting had their own stories: equal numbers to macOS, showing a big leap in code… blah…)