Skip to content

Instantly share code, notes, and snippets.

@qscuio
qscuio / animated_connectors.md
Created August 1, 2025 07:10 — forked from wey-gu/animated_connectors.md
How to create diagrams like Alex Xu/bytebytego's great work

Tool: draw.io

Animate the connectors

Animating your connectors is great for demonstrating directional flow charts, electrical circuits and more. To animate your connectors:

  1. Click on the connector you wish to animate. Hold Ctrl or Cmd and click to select multiple connectors
  2. On the right-hand side go to Style > Property and click on the arrow to expand the field
  3. Scroll down to Flow Animation and check the box
@qscuio
qscuio / Building Linux Kernel With Android.md
Created January 14, 2025 03:24 — forked from EduApps-CDG/Building Linux Kernel With Android.md
A guide of How to Build Linux Kernel using android

How to Build Linux Kernel with Android

This guide shows how to build Linux on a Android Device and was made for people that doesn't have s Computer.

Minimum Requiriments:

  • 4GB of free space (2GB if delete the temp files)
  • Android 5.0

Preparing the Environment

You need to install Termux

@qscuio
qscuio / answerfile
Created January 14, 2025 01:53 — forked from oofnikj/answerfile
Install Docker on Termux
KEYMAPOPTS="us us"
HOSTNAMEOPTS="-n alpine"
INTERFACESOPTS="auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
hostname alpine
"
TIMEZONEOPTS="-z UTC"
@qscuio
qscuio / answerfile
Created January 14, 2025 01:53 — forked from oofnikj/answerfile
Install Docker on Termux
KEYMAPOPTS="us us"
HOSTNAMEOPTS="-n alpine"
INTERFACESOPTS="auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
hostname alpine
"
TIMEZONEOPTS="-z UTC"
@qscuio
qscuio / docker.md
Created January 14, 2025 01:52 — forked from FreddieOliveira/docker.md
This tutorial shows how to run docker natively on Android, without VMs and chroot.

Docker on Android 🐋📱

Edit 🎉

All packages, except for Tini have been added to termux-root. To install them, simply pkg install root-repo && pkg install docker. This will install the whole docker suite, left only Tini to be compiled manually.


Summary

@qscuio
qscuio / elf_format_cheatsheet.md
Created August 23, 2024 05:45 — forked from x0nu11byt3/elf_format_cheatsheet.md
ELF Format Cheatsheet

ELF Format Cheatsheet

Introduction

Executable and Linkable Format (ELF), is the default binary format on Linux-based systems.

ELF

Compilation

@qscuio
qscuio / x86-assembly-notes.md
Created July 18, 2024 01:57 — forked from mikesmullin/x86-assembly-notes.md
Notes on x86-64 Assembly and Machine Code

Mike's x86-64 Assembly (ASM) Notes

Assembling Binary Machine Code

Operating Modes:

These determine the assumed/default size of instruction operands, and restricts which opcodes are available, and how they are used.

Modern operating systems, booted inside Real mode,

@qscuio
qscuio / gdbinit
Created September 7, 2023 13:42 — forked from CocoaBeans/gdbinit
.gdbinit - A user-friendly gdb configuration file
# INSTALL INSTRUCTIONS: save as ~/.gdbinit
#
# DESCRIPTION: A user-friendly gdb configuration file.
#
# REVISION : 7.3 (16/04/2010)
#
# CONTRIBUTORS: mammon_, elaine, pusillus, mong, zhang le, l0kit,
# truthix the cyberpunk, fG!, gln
#
# FEEDBACK: https://www.reverse-engineering.net
@qscuio
qscuio / latency.txt
Created January 30, 2023 06:45 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD