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@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@godber
godber / ncp
Created January 10, 2015 13:38
ncp - Netcat and Pigz based network file copy (faster than scp, but unencrypted)
#! /usr/bin/bash
# ncp - Netcat and Pigz based network file copy (faster than scp, but unencrypted)
# From this blog post
# http://intermediatesql.com/linux/scrap-the-scp-how-to-copy-data-fast-using-pigz-and-nc/
FILE_FULL=$1
REMOTE_HOST=$2
FILE_DIR=$(dirname $FILE_FULL)
@eatnumber1
eatnumber1 / renameat2.c
Last active May 12, 2024 17:45
Command-line tool to call renameat2(2)
/*
* Copyright (c) 2023 Russell Harmon
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
@JakubVanek
JakubVanek / Framebuffer to PNG
Last active May 5, 2023 21:10
Convert raw BGRA framebuffer to RGB png file
This program can be used to convert raw BGRA 8888 framebuffer to standard PNG file.
@htp
htp / curl-websocket.sh
Last active May 14, 2024 21:24
Test a WebSocket using curl.
curl --include \
--no-buffer \
--header "Connection: Upgrade" \
--header "Upgrade: websocket" \
--header "Host: example.com:80" \
--header "Origin: http://example.com:80" \
--header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
--header "Sec-WebSocket-Version: 13" \
http://example.com:80/

A description of known problems in Satoshi Nakamoto's paper, "Bitcoin: A Peer-to-Peer Electronic Cash System", as well as notes on terminology changes and how Bitcoin's implementation differs from that described in the paper.

Abstract

The longest chain not only serves as proof of the sequence of events witnessed, but proof that it came from the largest pool of CPU power.

@chrisveness
chrisveness / crypto-aes-gcm.js
Last active May 6, 2024 19:16
Uses the SubtleCrypto interface of the Web Cryptography API to encrypt and decrypt text using AES-GCM (AES Galois counter mode).
/**
* Encrypts plaintext using AES-GCM with supplied password, for decryption with aesGcmDecrypt().
* (c) Chris Veness MIT Licence
*
* @param {String} plaintext - Plaintext to be encrypted.
* @param {String} password - Password to use to encrypt plaintext.
* @returns {String} Encrypted ciphertext.
*
* @example
* const ciphertext = await aesGcmEncrypt('my secret text', 'pw');