Posts by matthewsnyder
From the average user's perspective: Back in the day when people were figuring out how to do shells, there were as many shell syntaxes as shells. Everyone made up their own little language to go w...
I think I finally found a topic the Arch wiki doesn't cover :) I have a Zigbee USB dongle and some Zigbee-capable wireless devices. The dongle is supposed to create a network to which the devices ...
Docker stores data under directories like /var/lib/docker/overlay2/xyz123. These sometimes grow very large, and Docker does not provide good instructions for how to easily manage the space used by ...
Certtool from GnuTLS can do this: certtool --certificate-info --infile=server.crt
Yes, you can run most Windows games on Linux through Wine. There are some specific caveats when using Wine, such as sandboxing (security), the choice of runner, drivers, video, controllers (gamepad...
If I run journalctl --list-boots I get a list of my previous boots. How can I tell which ones of these were resumes from hibernate, and which were booting "from scratch"? I want to do this becaus...
There is a popular partitioning scheme, described in the Arch wiki as LVM on LUKS. The meat of this is: /boot is its own unencrypted partition The rest of the drive is a giant LUKS partition I...
On Linux, the basic way to run every program is to invoke it through a terminal. The shortcuts in DEs come from ".desktop" files. On a Linux system, there are a couple of directories (system wide,...
How do I find the exact code of a key on my keyboard?
On a modern Linux system, what happens if you attempt to hibernate when your swap is smaller than your RAM? For example, say RAM is 16 GB and swap is 8 GB.
I have a systemd unit that does some stuff on the internet. Sometimes this gets fired at startup. I want to make sure it's delayed until the computer is connected to the internet. In my notes I fo...
When PSF says Python 3.8 is not supported, they are simply saying they will no longer bother fixing bugs in or adding stuff to that version. It's not like Python 3.8 will start automatically explod...
When I create the initramfs, I sometimes see messages like: ==> WARNING: Possibly missing firmware for module: 'xhci_pci' I get many for different modules. What do they mean? Should I in...
I see that this is self-answered, but I disagree that the answer provided is the best way. The best way is to properly utilize the Unix philosophy, by decomposing the problem into simpler sub-probl...
Suppose I want to get random numbers from /dev/random with basic CLI tools. Is there a way to do it, that's easier to type and read than python -c 'import random; print(100 + 200*random.random())'?...
How can I search for files on my system? Ideally, I would like to search by various criteria, like date, name, extension, etc.
Restarting NetworkManager should be enough: sudo systemctl restart NetworkManger
I have some bookmarked folders in GtkFileChooserDialog. I want to add these to my dotfiles. Where are the bookmarks stored?
How can I run a command later? I'm looking for a CLI way to schedule a command to be run later. I know that I could create a systemd timer, install it, activate it... That is too much work. I want...
I have an image (a photo) and I want to highlight certain parts of this. I want to do this from the CLI. I am planning to store the pixel coordinates of polygon vertices in a file, and when I run ...
Guix is a rolling release distro. Another well known rolling release distro is Arch Linux. In Arch, you are expected to frequently do system updates. Partial updates are not supported. In my exper...
I was looking into unlocking my login after too many incorrect password attempts. I found this post about it. Doing faillock -user $(whoami) --reset did indeed unlock the login. However, what exac...
I want to have a local DNS server on my home LAN, say at 192.168.1.123. All of my machines will use 192.168.1.123 as their only DNS server when connected to my home network. By default, my DNS ser...
What is the simplest shell idiom for stripping leading and trailing whitespace from a file or program output? Ideally I am looking for the equivalent of trim or strip methods in some languages. Th...
My keyboard has keys for mute, volume up, volume down. In i3wm, I used to have these bound with: bindsym XF86AudioRaiseVolume exec --no-startup-id pulsemixer --change-volume +10 --max-volume 100 ...
