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@cGandom
cGandom / RaspberryPi4-qemu.md
Last active April 24, 2025 16:48
Emulating Raspberry Pi 4 with Qemu

Emulating Raspberry Pi 4 with Qemu

Just a quick update before we dive in: what we're actually doing here is running Raspberry Pi OS (64-bit) on a QEMU virtual ARM setup. This isn't full-blown hardware emulation of the Raspberry Pi 4, but more about creating a virtual environment for the OS. It doesn't mimic all the specific hardware features of the Pi 4, but it's pretty useful and great for general testing. I turned to this solution mainly to extract a modified sysroot from the Raspberry Pi OS, something not readily available in other resources. For those looking into detailed emulation of the actual Raspberry Pi 4's hardware in QEMU, check out this link for the latest updates: https://gitlab.com/qemu-project/qemu/-/issues/1208.

Hope it helps! :D

Shortcomings: No GUI yet, only console.

Steps

@austinjp
austinjp / wifi-on-ubuntu-server-18.md
Last active February 10, 2023 10:10
Enabling wifi on Ubuntu server 18

Wifi on Ubuntu 18 server

TLDR

  1. Install wpasupplicant
  2. Turn on wifi radios: sudo nmcli radio wifi on
  3. Check your devices are recognised even if they're not "managed": sudo iwconfig
  4. Check your wifi (here called "wlp3s0") is capable of detecting nearby routers: sudo iwlist wlp3s0 scan
  5. Configure netplan by dropping a file called 01-netcfg.yaml into /etc/netplan/ or edit existing file there. See example below.
  6. netplan try, netplan generate, netplan apply.
@fevangelou
fevangelou / my.cnf
Last active April 18, 2025 11:00
Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers)
# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
#
# by Fotis Evangelou, developer of Engintron (engintron.com)
#
# ~ Updated September 2024 ~
#
#
# The settings provided below are a starting point for a 8-16 GB RAM server with 4-8 CPU cores.
# If you have different resources available you should adjust accordingly to save CPU, RAM & disk I/O usage.
#