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Sacha syenchuk

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Home & Building automation, Software & Hardware engineering

syenchuk / wordpress_repair.php

Last active October 2, 2015 18:38

Deletes postmeta duplicates

	<?php
	# Copyright Alexandre Syenchuk, 2012
	# a multi-site, multi-duplicates version of https://gist.github.com/1177018

	header('Content-type: text/plain; charset=utf-8');

	include('wp-config.php');
	include('wp-load.php');

	global $wpdb;

syenchuk / endianness.c

Created June 15, 2012 15:06

Endianness conversions with positive integers

	// converts 32-bits positive integer to 4-bytes little endian
	void to4li(unsigned long int const value, char * const buffer)
	{
	buffer[0] = value >> 8 * 0;
	buffer[1] = value >> 8 * 1;
	buffer[2] = value >> 8 * 2;
	buffer[3] = value >> 8 * 3;
	}

	// converts 16-bits positive integer to 2-bytes little endian

syenchuk / safealloc.c

Created June 15, 2012 15:38

Safe memory allocation in C

	void * safe_malloc(size_t const size)
	{
	void * p = malloc(size);

	if (p == NULL) {
	fprintf(stderr, "Out of memory\n");
	exit(1);
	}

	return p;

syenchuk / gist:5874040

Created June 27, 2013 04:54

<input> pattern for entering prices

syenchuk / gist:5874077

Last active December 19, 2015 01:09

Reverse the order of lines in a file using coreutils and moreutils

tac somefile | sponge somefile

syenchuk / fizzbuzz.py

Last active December 19, 2015 12:59

FizzBuzz

	# 1 min 20 s (including login and tests)
	for k in range(1, 101):
	if not k % 3 and not k % 5:
	print "FizzBuzz"
	elif not k % 3:
	print "Fizz"
	elif not k % 5:
	print "Buzz"
	else:
	print k

syenchuk / logtemp.py

Last active December 20, 2015 15:08

Trivial server temperature logger using lm-sensors in python

	# coding: utf-8

	import re
	import subprocess
	import time

	LOG_FILE = '/var/log/temperature.csv'

	res = subprocess.check_output(['sensors'])
	res = re.findall(r':\s+\+(\d\d\.\d)°C', res)

syenchuk / mit.txt

Created September 4, 2013 16:07

	The MIT License (MIT)

	Copyright (c) 2013 Alexandre Syenchuk

	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:

syenchuk / gen_wifi_pwd_sfr_box.js

Last active December 25, 2015 09:49

	// -- coding: utf-8; tab-width: 2; indent-tabs-mode: nil; --
	//
	// Generates Wi-Fi passwords generated in the web interface of the “La box de
	// SFR” home router.
	//
	// In many browsers, this implementation is broken because of a very short
	// period of the pseudo-random Math.random() funciton, usually around 2^30.
	//
	// You can generate a passwords file of several gigabytes and run a
	// successfull bruteforce attack in a couple of hours against A WPA key.

syenchuk / code128.py

Last active December 28, 2015 09:19

Produces SVG containing a Code 128 barcode