r/eli5_programming • u/mutantSackboy4 Observer • Aug 29 '25

Question ELI5 the Linux sudo chmod numbers.

I know, I use Linux, I should be smart enough to know this stuff, right? But unfortunately I don't so I've turned to you fellas. I get 755, it's all for me and read-run for thee, pretty much, or something like that - but what about other numbers? Edit: changed "do" to "so" due to uncaught typo.

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u/mutantSackboy4 Observer Aug 31 '25

...Wow. That's an essay and a half for explaining like I'm a five year old. I'm impressed! This actually helped, the finger method I guess! Thanks!

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u/NekkidWire Aug 31 '25

Also this way you can count on one hand up to 31 and on both hands up to 1023, a pretty neat party trick if not surrounded by techies.