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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Would being a Linux "power user" increase my chances of getting a job in IT/tech? (lemmy.world)

submitted 3 months ago by [email protected] to c/[email protected]

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I'm trying to get a job in IT that will (hopefully) pay more than a usual 9 to 5. I'm been daily driving Linux exclusively for about 2 1/2 years now and I'm trying to improve my skills to the point that I could be considered a so-called "power user." My question is this: will this increase my hiring chances significantly or marginally?

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[–] [email protected] 2 points 3 months ago* (last edited 3 months ago) (1 children)

Read, write, and execute are represented by the numbers 4, 2, and 1, respectively, and you add them together to get the permission

Maybe I'm the weird one here but this seems like a counter intuitive way to remeber/explain it. Each octal digit in the three digit number is actually just 3 binary digits ( 3 bit flags) in order of rwx. For example read and execute would be 101 -> 5.

[–] [email protected] 2 points 3 months ago (1 children)

While that's literally what it is, that's not really how it's represented and requires also understanding binary numbers.

Even knowing that, I've always found it easiest to get to the permissions the way I described, which when you think about it is actually the same as what you'd do to translate binary into decimal/octal if you don't have them memorized: look at the values of each position that's set to 1 and add them together. So, 101 in binary would be 4+0+1, or 5, which is the same as saying read is 4 and execute is 1 and add them together, the latter of which I think is easier to learn (and is how I've always seen it taught, though clearly YMMV)

Both get you to the same place though

[–] [email protected] 1 points 3 months ago

That's a fair point, I guess I used binary numbers so much i uni that I just know the small ones by heart and that's why I find it easier. Following the example, I never convert 101 as 4+0+1, I just see it and know it's 5.