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I installed Grub in the normal way and now I have entries in the Grub menu for linux, linux-lts, and the fallback versions of them. I want to add more entries to this. For example, I want to add l...
I've heard people say that Linux is a misnomer. Supposedly, the operating system is not Linux, Linux is just a part of it called a kernel, and the operating system should be called something else. ...
I understand that "mounting" in Linux refers to associating some "device" (usually some storage drive or a partition thereof, but it could be a region of RAM, some memory-mapped hardware, etc.) wit...
I've noticed that the default kernel selection for Ubuntu 22.04, for example, is Linux 5.15.0. Ubuntu 22.04 is a LTS release, which is supposed to have standard support until April 2027, and Linux ...
#!/bin/sh export LC_ALL=C # to make sorting not depend on locale # Ignore some well-known directories with many files find_args=' -path /usr/lib/modules -o -path /etc/ssl/certs -o -path ...
It sounds like what you want is: There is a program installed in the regular OS on my hard drive, but I am booted into a live OS. How do I run that program? The common way to do this is to us...
watch will let you do what you want, yes. This can be easily demonstrated by running watch with a brief-running command and a delay, such as: $ watch -n2 'date; sleep 5' and observing that the ...
I have a crappy USB hub. I connect some devices to this, like a USB microphone, which don't matter at all until I've booted successfully. Sometimes these devices cause an issue and my boot gets stu...
I have a systemd unit that runs hourly, but when the computer has just booted/logged in it will "catch up" on the previous run, so it ends up firing right after I log in. Is there a way to make it...
A lot of games are made for Windows, and don't have an official Linux version. Can you play these on Linux? Asking specifically about games, not all programs, because games have a lot of additiona...
You can use the pre-commit hook for this. Example .git/hooks/pre-commit: #!/usr/bin/bash git fetch if [ $(git status -sb |grep -c behind) -gt 0 ]; then echo "ERROR: local repo is beh...
Super+comma and Super+period were mapped as emoji annotations. Run ibus-setup, go to the emoji tab, delete the bindings. Thanks to this SO post.
I won’t repeat the points mentioned in Ordoviz’s answer, but there’s another important aspect which is often forgotten: when you pipe a script to a shell (or pass it as an argument to -c), whatever...
ip a command will conveniently show the addresses assigned to your network interfaces, but oftentimes this is not what the internet sees your machine as. So how to find your public IP address from...
How can I remap buttons on my mouse, especially for more exotic ones like MMO mice?
Init is starting all other processes. It's first process started by kernel. After that init uses init scripts to start all other needed functionality to boot up system, like mounting volumes, daem...
How to get the number of lines in a file? I.e. for a file like this: Line one Line 2 Final line I would like to do something like this: $ count-lines /path/to/the/file/above 3
For reasons of my own, I have services on my LAN which use HTTPS and I create my own certificates for these. Over the years, the usage of TLS has evolved considerably. Many features that were once...
I want to connect to my university network via OpenVPN under Fedora GNOME. I imported the openvpn configuration provided by the university in the Network Manager GUI and specified the user certifi...
xmllint from xmllib2 can do this: $ output-dirty-xml | xmllint --format - The dash in the end tells xmllint to read from stdin instead of a file. Source: manpage
I've been learning some Linux and I finally feel like I can find my way around the command line. But now I hear people say there are other, "non-POSIX" kinds of shell, with different semantics. Wha...
You want shuf. shuf -n1 -i 534-876874
In gpg(1), one normally adds recipients of an encrypted message with --recipient. Those recipients will be able to decrypt the message, and their key ID will appear unencrypted, so anyone will kno...
Motivating example: my Mint 20.3 distribution offers long-term support until April 2025, which matches the "standard support" offered for the upstream Ubuntu (20.04 "Jammy Jellyfish"). However, the...
When an upstream project stops supporting a version (e.g., Python stops supporting 3.8), the maintainers of the distribution do the job of supporting those components, applying security patches as ...
