Skip to content

Instantly share code, notes, and snippets.

View ggrandes's full-sized avatar
🛠️
I may be slow to respond.

G.Grandes ggrandes

🛠️
I may be slow to respond.
  • Spain
  • 11:29 (UTC +01:00)
View GitHub Profile
@gangefors
gangefors / Install FreeNAS SCALE on a partition and create a mirror.md
Last active September 27, 2025 03:59
How to install TrueNAS SCALE on a partition instead of the full disk

Install TrueNAS SCALE on a partition instead of the full disk

The TrueNAS installer doesn't have a way to use anything less than the full device. This is usually a waste of resources when installing to a modern NVMe which is usually several hundred of GB. TrueNAS SCALE will use only a few GB for its system files so installing to a 16GB partition would be helpful.

The easiest way to solve this is to modify the installer script before starting the installation process.

@jonte
jonte / tmp105.md
Last active June 2, 2025 10:34
Emulating a tmp105 temperature sensor using QEMU and Linux

This will configure QEMU to expose a tmp105 temperature sensor on the i2c-0 bus on x86_64. The temterature sensor can have its temperature set from the host OS, and the temperature can be read from the Linux client OS using the lm75 kernel module.

Building QEMU

For convenience, we will be emulating an x86 system. The x86 configuations which QEMU ships with do not contain the tmp105 sensor we will be using, so first we need to enable it.

Assuming you have the qemu sources in the qemu directory:

# cd qemu

echo "CONFIG_TMP105=y" >> default-configs/i386-softmmu.mak

@markusfisch
markusfisch / README.md
Last active October 19, 2025 11:04
Render some Markdown file to HTML and show it in your browser

Preview Markdown files locally

Render some Markdown file to HTML and show it in your browser.

This is useful when you want to check a Markdown file before pushing it onto GitHub/GitLab/etc or if you want to simply print a nice looking Markdown file. Just print it from your browser.

The look is broadly similar to that on GitHub but stripped down to the bare minimum. It can also be changed easily. Just have a look at the

@shakna-israel
shakna-israel / LetsDestroyC.md
Created January 30, 2020 03:50
Let's Destroy C

Let's Destroy C

I have a pet project I work on, every now and then. CNoEvil.

The concept is simple enough.

What if, for a moment, we forgot all the rules we know. That we ignore every good idea, and accept all the terrible ones. That nothing is off limits. Can we turn C into a new language? Can we do what Lisp and Forth let the over-eager programmer do, but in C?


/*
* This file is an MPU6050 demonstration.
* https://openest.io/en/2020/01/21/mpu6050-accelerometer-on-raspberry-pi/
* Copyright (c) 2020 Julien Grossholtz - https://openest.io.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
@thikade
thikade / zfs_cheatsheet.md
Last active September 28, 2025 20:37
ZFS commands cheatsheet for snapshots etc

ZFS Pools

ZFS admin

  • All pools' status: zpool status
  • specific pools status: zpool status pdata1

Filesystems

import datetime
from telethon import TelegramClient
api_id = 123456789
api_hash = 'abcdef123456789'
client = TelegramClient('session_name', api_id, api_hash)
client.session.report_errors = True
client.start()
@zoilomora
zoilomora / README.md
Last active April 20, 2025 20:46
How to disable systemd-resolved in Ubuntu

How to disable systemd-resolved in Ubuntu

Stages

  • Disable and stop the systemd-resolved service:

      sudo systemctl disable systemd-resolved.service
      sudo systemctl stop systemd-resolved
    
  • Then put the following line in the [main] section of your /etc/NetworkManager/NetworkManager.conf:

@mrunkel
mrunkel / zfs_cheatsheet.md
Last active August 9, 2025 18:41
My ZFS cheatsheet

ZFS commands cheatsheet

Devices and Pools

List all devices in the server

lsblk -S

List all pools

zpool list

Screen Quick Reference

Basic

Description Command
Start a new session with session name screen -S <session_name>
List running sessions / screens screen -ls
Attach to a running session screen -x
Attach to a running session with name screen -r <session_name>