Adrian Günter adrolter

QEMU version: 2.2.0
HDD init: qemu-img create -f qcow debian8-arm64.img 10G

Netinstall initrd: http://ftp.ru.debian.org/debian/dists/jessie/main/installer-arm64/20150107/images/netboot/debian-installer/arm64/initrd.gz
Netinstall kernel: wget http://ftp.ru.debian.org/debian/dists/jessie/main/installer-arm64/20150107/images/netboot/debian-installer/arm64/linux

Netinstall start:
 qemu-system-aarch64 -machine virt -cpu cortex-a57 -nographic -smp 1 -m 512 -kernel linux -initrd initrd.gz -append "root=/dev/ram console=ttyAMA0" -global virtio-blk-device.scsi=off -device virtio-scsi-device,id=scsi -drive file=debian8-arm64.img,id=rootimg,cache=unsafe,if=none -device scsi-hd,drive=rootimg -netdev user,id=unet -device virtio-net-device,netdev=unet -net user

Hello software developers,

Please check your code to ensure you're not making one of the following mistakes related to cryptography.

I. General Mistakes

Writing your own home-grown cryptography primitives (For example: Mifare Classic)
- Exception: For the sake of learning, but don't deploy it in production.
Using a fast hash function (e.g. MD5, SHA256) for storing passwords. Use bcrypt instead.
Not using a cryptographically secure random number generator

Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2025-03-24: Commenting is disabled permanently. Previous comments are archived at web.archive.org. ]

Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

PHP `is_a()` vs `is_subclass_of()`

To compute the results, just use Melody and run the script:

melody run https://gist.github.com/Pierstoval/ed387a09d4a5e76108e60e8a7585ac2d

ELF Format Cheatsheet

Introduction

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

	<?php

	namespace Esel\ContentBundle\Command;

	use Doctrine\ORM\Mapping\ClassMetadata;
	use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
	use Symfony\Component\Console\Command\Command;
	use Symfony\Component\Console\Input\InputInterface;
	use Symfony\Component\Console\Output\OutputInterface;

	/**
	* VH and VW units can cause issues on iOS devices: http://caniuse.com/#feat=viewport-units
	*
	* To overcome this, create media queries that target the width, height, and orientation of iOS devices.
	* It isn't optimal, but there is really no other way to solve the problem. In this example, I am fixing
	* the height of element `.foo` —which is a full width and height cover image.
	*
	* iOS Resolution Quick Reference: http://www.iosres.com/
	*/

	ssm.addConfigOption({name:"orientation", test: function(){
	//landscape mode
	if(this.state.orientation === "landscape" && window.innerWidth >= window.innerHeight){
	console.log('landscape');
	return true;
	}
	//portrait mode
	else if (this.state.orientation === "portrait" && window.innerWidth <= window.innerHeight){
	console.log('portrait');
	return true;

	ODROIDC2-UBOOT-CONFIG

	# Possible screen resolutions
	# Uncomment only a single Line! The line with setenv written.
	# At least one mode must be selected.

	# 480 Lines (720x480)
	# setenv m "480i60hz" # Interlaced 60Hz
	# setenv m "480i_rpt" # Interlaced for Rear Projection Televisions 60Hz
	# setenv m "480p60hz" # 480 Progressive 60Hz

	# Define ULID_DECODE and ULID_ENCODE which convert a ulid string to a binary and vice versa.

	delimiter //
	DROP FUNCTION IF EXISTS ULID_DECODE//
	CREATE FUNCTION ULID_DECODE (s CHAR(26)) RETURNS BINARY(16) DETERMINISTIC
	BEGIN
	DECLARE s_base32 CHAR(26);
	SET s_base32 = REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(UPPER(s), 'J', 'I'), 'K', 'J'), 'M', 'K'), 'N', 'L'), 'P', 'M'), 'Q', 'N'), 'R', 'O'), 'S', 'P'), 'T', 'Q'), 'V', 'R'), 'W', 'S'), 'X', 'T'), 'Y', 'U'), 'Z', 'V');
	RETURN UNHEX(CONCAT(LPAD(CONV(SUBSTRING(s_base32, 1, 2), 32, 16), 2, '0'), LPAD(CONV(SUBSTRING(s_base32, 3, 12), 32, 16), 15, '0'), LPAD(CONV(SUBSTRING(s_base32, 15, 12), 32, 16), 15, '0')));
	END//