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A small Device Tree Bringup Guide

Introduction

So, you guys might be wondering, how do these "Developers" get your favourite Custom roms, such as LineageOS, Paranoid Android etc., to their own devices. Well I'm here to Guide you on how to do it, specifically on how to bringup or make your own device tree from scratch or adapting.

Gist of this Guide: This is for people with genuine interest in Android OS porting/development. After going through this guide, you should be able to do a total device tree bringup on your own.

Prerequisite: Certain requirements are to be met before you start with this amazing journey.

How To Work With Multiple Github Accounts on a single Machine

Let suppose I have two github accounts, https://github.com/rahul-office and https://github.com/rahul-personal. Now i want to setup my mac to easily talk to both the github accounts.

NOTE: This logic can be extended to more than two accounts also. :)

The setup can be done in 5 easy steps:

Steps:

Step 1 : Create SSH keys for all accounts
Step 2 : Add SSH keys to SSH Agent

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

	// Merge all attributes of multiple PDF files (pdf-full-merge.js)
	// Extended from MuPDF's docs/examples/pdf-merge.js

	// Ever had problems with tools that don't copy certain attributes of a PDF?
	// This script uses MuPDF to merge/join/concatenate as much as possible, including:
	// - bookmarks / outlines / table of contents
	// - link attributes of said outlines, such as viewrect and zoom
	// - whether outlines appear open or closed by default
	// - annotations
	// - 3d objects / PDF3D

	#define CLK 26
	#define DIO 27

	#include <Arduino.h>
	uint8_t digits[] = { 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f };

	void start(void)
	{
	digitalWrite(CLK,HIGH);//send start signal to TM1637
	digitalWrite(DIO,HIGH);

	///
	/// Author: Daniel Wright
	///
	/// Linux compile:
	/// ${CC} -fPIC -fpie -std=c++14 -fno-exceptions -fno-rtti -lstdc++ -lm -lc -ldl mmap_exec_ex1.cpp -o mmap_exec_ex1
	///
	/// Tested on Android 7.1.1 (x86 emulator), as well as Ubuntu 16.04 (Core i5 3570k [targeting x64] using kernel 4.4.0-59)

	#include <dlfcn.h>
	#include <stdint.h>

	import SwiftUI

	struct KeyframeValues {
	var scale = 1.0
	var horizontalStretch = 1.0
	var verticalStretch = 1.0
	var translation = 0.0
	var rotation = Angle.zero
	}

	<?php

	use Symfony\Component\Console\Helper\ProgressBar;
	use Symfony\Component\Console\Output\ConsoleOutput;

	class DoSomething extends Migration
	{
	public function up()
	{
	$output = new ConsoleOutput();

	import Cocoa
	import Foundation

	// Move around and click automatically at random places in macos, kinda human like in a cheap way.


	// Moves the mouse pointer to `moves` random locations on the screen and runs the `action` function at
	// each point with the point as argument.
	func mouseMoveWithAction(moves: Int, action: (CGPoint) -> Void = defaultAction) {
	let screenSize = NSScreen.main?.visibleFrame.size

	package main

	import (
	"flag"
	"fmt"
	"log"
	"sync"
	"time"
	)