Jeff Geerling geerlingguy

## c2clat.sh
# Make sure CPU is in performance mode (see notes in Gist comments).
echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

# Install c2clat and gnuplot-nox
sudo apt install -y gnuplot-nox
git clone https://github.com/rigtorp/c2clat
cd c2clat
g++ -O3 -DNDEBUG c2clat.cpp -o c2clat -pthread

# Set up the PNG dimension (set to 4096,2160 for 96+ CPU cores)

## led_control.md

      
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                albal
                / led_control.md
            
            
              Created
              January 15, 2025 19:00
                — forked from ffalt/led_control.md
            
              
                Lincstation LED commands on TrueNAS 24.10
              
          
    Disclaimer: These commands with wrong parameters could damage your system. Take care!
Before you use any commands on this page you MUST find out the bus number for the led control on your system
Run
i2cdetect -y 0

i2cdetect -y 1


## hplcalculator.py
#!/usr/bin/env python3

import math
import psutil

def get_system_info():
    # Get the number of physical cores
    num_cores = psutil.cpu_count(logical=False)

    # Get available physical memory (in bytes)

## memcpy_unaligned.c
#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
//#include <stdlib.h>

void* memcpy(void* dst, const void* src, size_t n){
	volatile char* vc_src = (char*)src;
	volatile char* vc_dst = (char*)dst;
	// copy byte by byte, hopefully avoiding any alignment issues
	size_t pos = 0;

## Day0.md

      
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                aussielunix
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                Runsheet for bootstrapping a clean MacOS M1 using https://github.com/geerlingguy/mac-dev-playbook
              
          
    Day 0 - Bootstrap MacOS with Ansible

After factory resetting the maching you will need to do the following things to bootstrap it with Ansible.

Set default shell to bash chsh -s /bin/bash (optional)
Open the App Store and sign in (but do not install anything)
Install command line tools

xcode-select --install


Add Python 3.8 to the $PATH
export PATH="$HOME/Library/Python/3.8/bin:$PATH"


## photogrammetry.sh
#!/bin/bash
# Photogrammety automation script.
#
# Based on https://peterfalkingham.com/2018/04/01/colmap-openmvs-scripts-updated/
# Adapted from https://www.instructables.com/Free-Photogrammetry-on-Mac-OS-From-Photos-to-3D-Mo/
#
# See full guide on Jeff Geerling's blog:
# TODO
#
# Usage:

## Ansible101Notes.md

      
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                Notes, snippets and one-liners from the Ansible 101 YouTube series based on Jeff Geerling's book Ansible for DevOps
              
          
    Ansible 101

References:

Ansible 101

Ansible for DevOps Examples

Book:

Ansible for DevOps by Jeff Geerling

Ressources:

Jeff Geerling's Ansible Content

Blog | Jeff Geerling

  
## Makefile
CC = gcc
RM = rm -f

INSTRUMENT_FOR_PROMETHEUS := false

ifeq ($(INSTRUMENT_FOR_PROMETHEUS),true)
  CFLAGS  = -Wall -DINSTRUMENT_FOR_PROMETHEUS
  LIBS    = -lbcm2835 -lprom -lpromhttp -lmicrohttpd
else
  CFLAGS  = -Wall

## pi_fan_pwm.c
/*

Deprecated, see https://gist.github.com/alwynallan/1c13096c4cd675f38405702e89e0c536

If you have to use software PWM, it's still here.

*/


## increase-pci-bar-space.sh
#!/bin/bash

# The default BAR address space available on the CM4 may be too small to allow
# some devices to initialize correctly. To avoid 'failed to assign memory'
# errors on boot, you can increase the range of the PCIe bus in the Raspberry
# Pi's Device Tree (a .dtb file specific to each Pi model).
#
# You should probably read up on Device Trees if you don't know what they are:
# https://www.raspberrypi.org/documentation/configuration/device-tree.md
#
	# Make sure CPU is in performance mode (see notes in Gist comments).
	echo performance \| sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

	# Install c2clat and gnuplot-nox
	sudo apt install -y gnuplot-nox
	git clone https://github.com/rigtorp/c2clat
	cd c2clat
	g++ -O3 -DNDEBUG c2clat.cpp -o c2clat -pthread

	# Set up the PNG dimension (set to 4096,2160 for 96+ CPU cores)
	#!/usr/bin/env python3

	import math
	import psutil

	def get_system_info():
	# Get the number of physical cores
	num_cores = psutil.cpu_count(logical=False)

	# Get available physical memory (in bytes)
	#include <stddef.h>
	#include <stdio.h>
	#include <stdint.h>
	//#include <stdlib.h>

	void* memcpy(void* dst, const void* src, size_t n){
	volatile char* vc_src = (char*)src;
	volatile char* vc_dst = (char*)dst;
	// copy byte by byte, hopefully avoiding any alignment issues
	size_t pos = 0;
	#!/bin/bash
	# Photogrammety automation script.
	#
	# Based on https://peterfalkingham.com/2018/04/01/colmap-openmvs-scripts-updated/
	# Adapted from https://www.instructables.com/Free-Photogrammetry-on-Mac-OS-From-Photos-to-3D-Mo/
	#
	# See full guide on Jeff Geerling's blog:
	# TODO
	#
	# Usage:
	CC = gcc
	RM = rm -f

	INSTRUMENT_FOR_PROMETHEUS := false

	ifeq ($(INSTRUMENT_FOR_PROMETHEUS),true)
	CFLAGS = -Wall -DINSTRUMENT_FOR_PROMETHEUS
	LIBS = -lbcm2835 -lprom -lpromhttp -lmicrohttpd
	else
	CFLAGS = -Wall
	/*

	Deprecated, see https://gist.github.com/alwynallan/1c13096c4cd675f38405702e89e0c536

	If you have to use software PWM, it's still here.

	*/
	#!/bin/bash

	# The default BAR address space available on the CM4 may be too small to allow
	# some devices to initialize correctly. To avoid 'failed to assign memory'
	# errors on boot, you can increase the range of the PCIe bus in the Raspberry
	# Pi's Device Tree (a .dtb file specific to each Pi model).
	#
	# You should probably read up on Device Trees if you don't know what they are:
	# https://www.raspberrypi.org/documentation/configuration/device-tree.md
	#