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Since the Pause key is useless, I tried to map it to a modifier key. What is straightforward for other keys turned out not to work fine for Pause. By inspecting the output of xev -event keyboard |...
Using BASH, how can I redirect stdout and stderr each, to two separate files, simultaneously? That's a mouthful, let me clarify a little: I have a hypothetical script that may/will generate outpu...
A project I want to work on requires Ruby. I was directed to RVM or rbenv. I tried rbenv first because it has Mac instructions, ran into failures, uninstalled it and installed RVM, and still ran ...
I'm still trying to solve my problem with installing Ruby on a new Mac, and some discussions are saying that I need to reinstall brew because of the change from the old chipset to the M1. (I'm jus...
If snap-store itself is preventing the update, it's straightforward: snap-store --quit sudo snap refresh snap-store But sometimes it might be something else, in which case the above solution w...
The solution is to use an associative array to store what you've already seen: #!/bin/bash unset seen declare -A seen for arg in "$@" do if [[ -z "${seen[$arg]}" ]] then ...
On a Linux system, a lot of files are installed from packages, many of which have different licenses (and sometimes different licenses for different files in the package). If I want to figure out ...
Here's an alternative that is a one-liner drop-in for your existing script: eval set -- $(printf "%q\n" "$@" | sort -u) It works by escaping the initial arguments, piping the escaped arguments ...
How to convert a markdown file to PDF? The final PDF output should represent the rendered markdown file. Bonus points if the method also preserves colored emojis. Both CLI and GUI solutions are we...
Note that if you want to debug the currently installed version of NetworkManager, you don't have to compile NetworkManager yourself. Instead, make GDB download symbol files via debuginfod. You can ...
While * belongs to the POSIX standard, ** is an extension. You are right it's not in man 7 glob. Tools that treat ** specially (i.e. not as * simply followed by *) tend to agree what it means, but ...
We are all Linux users and enthusiasts on this site, as well as caring about FOSS. Although technically this is a site for technical Q&A, I think some level of Linux activism is possibly benefi...
This is an ideal case for ImageMagick. Given input.png: Running this command: convert input.png -draw 'fill yellow fill-opacity 0.5 polygon 50,50 100,30 150,50 100,150' output.png Produces ...
I'm a complete beginner, and just installed Linux for the first time. I chose a popular distribution, but I've run into some issues, or have a few questions. However, I don't know if I have Gnome, ...
How to find the exact path to an executable file present in your PATH. I.e. commands you can call by just their names. E.g. what executable gets called when I type find and hit enter? $ hypotheti...
This blog post describes a privilege escalation, exploiting tar's --checkpoint-action option. The privilege escalation is used to solve a TryHackMe challenge. The root user calls tar via cron whi...
I'm having trouble visualizing exactly what your setup is like, but if I understand correctly, then: You have one client that you are connecting from You have one server that you are able to co...
There are keyboard shortcuts for navigation. Unfortunately they don't seem to be documented in help (at least I couldn't find an entry there), but you can see a list by typing ?. The red frame is ...
with pacman --debug We can display the mirrors that pacman uses with the --debug option. For example, when running pacman --debug -Sy, pacman will write lines like these to standard error: debug...
apt-mark aims to do this: the commands apt-mark showmanual and apt-mark showauto should show you respectively the packages which you explicitly installed and the ones which were added as dependenci...
Use xclip(1). For example: $ printf '%s' foo | xclip; And now Shift+Insert to paste. There's a primary selection, a secondary selection, and a clipboard selection, and you can chose between t...
My immediate reaction would be that yes, it can definitely fit in the general Q&A category. And there is no rule against self-answers to questions. However, please do take a bit of care with h...
I certainly think "how to do X" is perfectly good for a question on Codidact, so long as X is sufficiently focused. A well-explained overview of a system is also useful, given it contains enough in...
If I had a fast drive (SSD) and a slow one (HDD), what parts of my Linux system should go on the fast one?
My understanding is that one of the key advantages of Linux is modularity: the actual Linux kernel is quite small, and then what we call Linux is that plus the "rest of the system" - hence "operati...
