Michael Trouw michahell

Multiple SSH Keys on same client

Check if you have existing keys by opening the terminal and entering: ssh-add -l OR ls -al ~/.ssh and check for any file called (usually) id_rsa or similar

Identify the host you're using your current key for. You probably added this key to, for example your github or gitlab account. We will use this later on.

If you don't have a config file on ~/.ssh folder, you will need to create one. We'll get back to this later.

Theming Slack for OSX

So, you love Slack, but you hate applications with large white backgrounds? Why not use Dark Mode!

Unfortunately, Slack does not have a Dark Mode, although it's on their list of possibilities.

But, don't fret - there is a solution! Because the slack native desktop apps are just wrappers around a web app, we can inject our own CSS to customize the application to our liking.

How to (OSX Only)

Keybase proof

I hereby claim:

I am michahell on github.
I am michahell (https://keybase.io/michahell) on keybase.
I have a public key ASB8qALtw0hvE4VRNKqJloZZ1lXxsCXzrm8YCa2p4vsmDQo

To claim this, I am signing this object:

Virtuoso and some other SPARQL endpoint software extend the SPARQL 1.1 spec with some custom functions. one of them is free text search, which is INCREDIBLY much more faster than using regular expression text searches on, for example, DBPedia.

Here is an example SPARQL query for DBPedia using regex's :

SELECT DISTINCT ?film ?some_studio ?some_producer
WHERE {
    ?film rdf:type <http://dbpedia.org/ontology/Film> .
    ?film foaf:name ?film_title .
    FILTER regex(str(?film_title), "\\bArgo\\b") .

Viewing images in ST2

THIS Sublime Text 2 plugin

Enables you to view images from ST2 directly using a menu command or the hotkey combo CMD + SHIFT + SPACE. Since it uses the native OSX quick look functionality you can practically view anything that quick look can display!

TODO's in ST2

I've become used to adding TODO's since Flash Builder so i sought an alternative for sublime text 2, here among others. I've found one that's great and isn't tied to user- or application wide settings but can be project-specific: SublimeTODO. install it using the Sublime Package Manager and further instructions are to be found in the github readme.

	/*
	* Easing Functions - inspired from http://gizma.com/easing/
	* only considering the t value for the range [0, 1] => [0, 1]
	*/
	EasingFunctions = {
	// no easing, no acceleration
	linear: function (t) { return t },
	// accelerating from zero velocity
	easeInQuad: function (t) { return t*t },
	// decelerating to zero velocity

	// Represents an edge from source to sink with capacity
	var Edge = function(source, sink, capacity) {
	this.source = source;
	this.sink = sink;
	this.capacity = capacity;
	};

	// Main class to manage the network
	var Graph = function() {
	this.edges = {};

	/**
	* Converts an RGB color value to HSL. Conversion formula
	* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
	* Assumes r, g, and b are contained in the set [0, 255] and
	* returns h, s, and l in the set [0, 1].
	*
	* @param Number r The red color value
	* @param Number g The green color value
	* @param Number b The blue color value
	* @return Array The HSL representation

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote