Quite a good summary overview, in the linked article below, which is easy to follow. As the saying goes for Linux “Everything in Linux is a file”, so understanding file permissions is quite important. Also, if you do any web hosting or similar server based applications, it is often incorrect file permissions that create errors (usually just needing file ownership or permissions corrected to solve them).
I can probably add, too, that you can also change file permissions and ownership across all files and sub-directories within a folder, with the addition of the -R option. Although there are many flavours of Linux distros out there, these basics remain the same across all of them.
See https://linuxhostsupport.com/blog/understanding-the-linux-file-permissions/
#technology #linux #files #permissions
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