Ahmed-Amine Boustani aaBoustani

Terminal

Find original file of a symlink

readlink -f $(which command)
lsof -i :[port]

Change swap size

Make all swap off
sudo swapoff -a
Resize the swapfile

Hosts

000webhost:

Stores your website files and its database. It can be used to store PHP files to act as connector to your desktop/mobile applicaiton.
The free verison can be a pain to work with (the server may crash or prevent you from connect to your files or database).

heroku:

You can use the free version, but you still need to provide them with an international credit card account to deploy.

Keep&Share:

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	{
	"_id" : "<ObjectId>",
	"picture" : "<String>",
	"name" : "<String>",
	"email" : "<String>",
	"city" : "<String>",
	"location" : {
	"type" : "Point",
	"coordinates" : ["<longitude>", "<latitude>"]
	}

	module.exports = {
	find (req, res) {
	Model.native((error, collection) => {
	if (error) return res.badRequest(error);
	return collection.aggregate([{
	$match: {
	id: { $in: req.ids }
	}
	},
	{

	// in /usr/share/applications/Appname.desktop
	// Don't forget to sudo

	[Desktop Entry]
	Name=appname
	Type=Application
	Exec=path/to/executable
	Terminal=false
	Icon=path/to/icon
	Comment=Description

	#include <bitset>

	using namespace std;

	bool is_power_of_two (int N) {
	bitset<100000> foo(N); //bitset<numberOfBitsDesired>
	return foo.count() == 1;
	}