I have seen a large number of questions on Super User recently all around the same topic of Linux and Unix file permissions. For example:
… and …
In a world of Windows where file permissions can be granted on a per-user basis, Linux and Unix permissions seem to be very hokey and restricted.
Well, let me tell you, they’re not. For such a seemingly basic arrangement they are an incredibly powerful tool.
Most people forget that to do anything even remotely fancy with permissions in Linux you really have to couple them with groups. And you really can do some fancy things with them! …