turingbirds

/**
 * Compute the (Moore-Penrose) pseudo-inverse of a libgsl matrix in plain C.
 *
 * Compile uding:
 *
 *     gcc moore_penrose_pseudoinverse.c -lgsl -lblas
 *
 * Dependencies:
 * - libgsl (GNU Scientific Library) 
 * - libblas (Basic Linear Algebra Subprograms)

turingbirds

GNUPG CHEATSHEET

Setting up: key generation

This generates a public/private keypair.

$ gpg --gen-key

$ gpg --list-secret-keys

turingbirds

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""Execute a child program in a new process"""
import os
import subprocess



def exec_binary(cmd_line_list, cwd=None, stdout=None, stderr=None, verbose=False):
	"""Invoke an executable file.

turingbirds

usbreset.c

Due to Alan Stern¹.

List your USB devices

---

1. http://marc.info/?l=linux-usb&m=121459435621262&w=2↩

turingbirds

<?php

header("Content-Type: text/html; charset=utf-8");

function display_filesize($filesize) {
	if (is_numeric($filesize)) {
		$decr = 1024;
		$step = 0;
		$prefix = array('Byte','KB','MB','GB','TB','PB');

turingbirds

Git cheatsheet

Set up Git

git config --global user.email "john_doe@example.com"
git config --global user.name "John Doe"