LeetCodes

Colours in terminal

It's a common confusion about terminal colours... Actually we have this:

plain ascii
ansi escape codes (16 colour codes with bold/italic and background)
256 colour palette (216 colours + 16 ansi + 24 gray) (colors are 24bit)
24bit true colour ("888" colours (aka 16 milion))

printf "\x1b[${bg};2;${red};${green};${blue}m\n"

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

Branching with git for safe merging

Version Control is a critical tool in any software development project. Despite this, many of us suffer from a crippling fear of one terrifying event: The Dreaded Merge Conflict. Here I'll show you a risk-free way of merging with an easy way to back out if things go belly up.

The scenario

You've been working for hours on a bug fix. Your changes were due an hour ago and you've just finished your unit tests. It's time to upload your changes...

c:\dev>git status
# On branch master

Changes not staged for commit:

#How to create a .file or .folder on Windows

There are several ways

1. Rename

Create file.txt
Rename to .file., the last dot will be dropped, you'll have .file

Works the same with a file or a directory.

Using Git to Manage a Live Web Site

Overview

As a freelancer, I build a lot of web sites. That's a lot of code changes to track. Thankfully, a Git-enabled workflow with proper branching makes short work of project tracking. I can easily see development features in branches as well as a snapshot of the sites' production code. A nice addition to that workflow is that ability to use Git to push updates to any of the various sites I work on while committing changes.

ImageMagick and FFMPEG commands

Remember that the order of parameters/options is very important.

convert images and save to another dir

convert *.png -set filename:original %t 'export/%[filename:original].jpg'

	#==========================================================#
	# Visualizing Facebook networks with friend photos #
	# Katya Ognyanova, www.kateto.net, @ognyanova #
	#==========================================================#

	# Find more details at http://bit.ly/fbgephi

	#==========================================================#
	#### Collect the data using the RFacebook package ####

	// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
	// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

	// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

	// MIT license

	(function() {
	var lastTime = 0;
	var vendors = ['ms', 'moz', 'webkit', 'o'];

	Raͩnͤsͣoͭmͪ

	A
	aͣ bͣ cͣ dͣ eͣ fͣ gͣ hͣ iͣ jͣ kͣ lͣ mͣ nͣ oͣ pͣ qͣ rͣ sͣ tͣ uͣ vͣ wͣ xͣ yͣ zͣ

	E
	aͤ bͤ cͤ dͤ eͤ fͤ gͤ hͤ iͤ jͤ kͤ lͤ mͤ nͤ oͤ pͤ qͤ rͤ sͤ tͤ uͤ vͤ wͤ xͤ yͤ zͤ

	I
	aͥ bͥ cͥ dͥ eͥ fͥ gͥ hͥ iͥ jͥ kͥ lͥ mͥ nͥ oͥ pͥ qͥ rͥ sͥ tͥ uͥ vͥ wͥ xͥ yͥ zͥ

	Function QuickClip(input)
	'@description: A quick way to set and get your clipboard.
	'@author: Jeremy England (SimplyCoded)
	If IsNull(input) Then
	QuickClip = CreateObject("HTMLFile").parentWindow.clipboardData.getData("Text")
	If IsNull(QuickClip) Then QuickClip = ""
	Else
	CreateObject("WScript.Shell").Run _
	"mshta.exe javascript:eval(""document.parentWindow.clipboardData.setData('text','" _
	& Replace(Replace(input, "'", "\\u0027"), """", "\\u0022") & "');window.close()"")", _