If you’re running a modern Linux distro like Debian 12 “Bookworm,” NetworkManager is the default way to manage networking. Below is a simple, copy-paste friendly guide to turn your device (e.g., a Raspberry Pi or small PC with a supported Wi-Fi adapter) into a wireless access point. We’ll cover WPA2, WPA3, and a mixed “transition” mode.
In the commands below, we assume you already created an AP connection profile named
rpi-ap. Replace it with your own profile name if different.
This short Python script shows how to use asyncio to read a single line from standard input (stdin) asynchronously and report what was read to standard error (stderr). It’s a compact example of wiring low-level OS pipes into asyncio’s high-level stream APIs.
make_reader(fp) takes a binary file object (like sys.stdin.buffer) and:
When you work across multiple repositories—or switch between personal and work projects—it’s easy to forget which Git identity (name and email) a repo should use. This simple Git hook helps by prompting you to pick a past author identity whenever you check out a branch, then automatically sets user.name and user.email for that repository.
git checkout.user.name and user.email, it does nothing.fzf), and lets you choose.
Git allows developers to extend its functionality by creating their own custom commands. This is a simple and powerful way to automate tasks or integrate new workflows directly into Git. For example, if you create a command named git-hoge, you can call it simply by typing git hoge in the terminal.
When you run a command like git hoge, Git automatically looks for an executable file named git-hoge in your system’s PATH. If it finds it, Git runs that file as if it were a built-in Git command.
If you manage a Linux system, you may sometimes allow users to run specific administrative commands with sudo. One common example is letting trusted users execute the shutdown command: /usr/sbin/shutdown. But there’s a subtle security detail to consider—how long sudo remembers (or “caches”) a user’s password after they authenticate.
Defaults!/usr/sbin/shutdown timestamp_timeout=0
When running a Linux virtual machine on Microsoft Hyper-V, you may want to use the Wayland display server for better performance and smoother graphics compared to X11. However, Wayland cannot function correctly if the Hyper-V framebuffer driver (hyperv_fb) is loaded, because it interferes with the kernel’s native framebuffer setup. To enable Wayland, you need to disable (blacklist) the hyperv_fb module.
Below are two methods to do this for Ubuntu and Rocky Linux.
This method edits the GRUB configuration to prevent hyperv_fb from loading at boot time.
This Python script provides a small command-line utility that can split a stream of bytes (from standard input) into many chunk files, and concatenate those chunk files back to a single stream (written to standard output). It’s designed to be flexible by letting you define how files are created, saved, and read using your own shell commands.
stdin in fixed-size pieces and writes each piece to a new file. It can group files into numbered directories.stdout.Both operations delegate the actual filesystem work (mkdir, write, read) to external commands you specify. This makes the tool adaptable to many environments (local disk, special devices, custom commands, etc.).
If you have a directly attached SD-card reader (or other removable media that is not USB) and wsl --mount or usbip won’t work, exporting the raw Windows device over the network with nbd (via nbdkit) is a handy workaround. nbdkit can run on Windows and serve \\.\PHYSICALDRIVEx to your WSL2 instance, where you can attach it as /dev/nbd0. The nbdkit project and docs explain the server/plugin model nicely. ([libguestfs.org][1])
Below is a short, practical recipe.
References / useful links (keep these): https://rwmj.wordpress.com/2024/01/24/nbdkit-binaries-for-windows/ ([Richard WM Jones][2]) https://koji.fedoraproject.org/koji/userinfo?userID=458 https://koji.fedoraproject.org/koji/buildinfo?buildID=2835676
If you want legacy ALSA clients and modern Pulse/PipeWire clients to play through the same audio server — for example inside WSL2 or a minimal Linux environment — these commands form a compact recipe. Below I’ll walk through what each line does and why it’s useful.
apt install -y alsa-utils pulseaudio-utils pipewire-bin libasound2-plugins