this post was submitted on 16 Dec 2025
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Linux

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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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I've been setting up a new Proxmox server and messing around with VMs, and wanted to know what kind of useful commands I'm missing out on. Bonus points for a little explainer.

Journalctl | grep -C 10 'foo' was useful for me when I needed to troubleshoot some fstab mount fuckery on boot. It pipes Journalctl (boot logs) into grep to find 'foo', and prints 10 lines before and after each instance of 'foo'.

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[–] HakunaHafada@lemmy.dbzer0.com 2 points 6 days ago (1 children)

Absolutely wild stuff, there. Thanks for knowledge sharing!

[–] bigredgiraffe@lemmy.world 2 points 6 days ago

Hah I am glad it was helpful! Glad to share, I always felt like half the point of learning is to share what you learned. That is one of my favorite “hidden gems” for lack of a better term that can be a real time saver.

Bonus just for more fun: you can use cd - to switch back to the directory you were last in after changing directories, it toggles the top two paths in the stack. It is similar to how pushd/popd work if you have you used those. I use that one a ton, there are fancier tools now but that one works everywhere.

Oh also, anyone on a Mac needs to know about pbcopy, Linux has xclip and I don’t remember what the Wayland analog is.