Cadu Ribeiro duduribeiro

The introduction to Reactive Programming you've been missing

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

First create a Ubuntu 13.04 x64 droplet on DigitalOcean Control Panel

Then ssh with root account, run this in termianl:

$ wget -qO- https://raw.github.com/progrium/dokku/master/bootstrap.sh | sudo bash

Install ImageMagick for image conversion:

brew install imagemagick

Install tesseract for OCR:

brew install tesseract --all-languages

Or install without --all-languages and install them manually as needed.

	SPC s c remove highlight

	**** Files manipulations key bindings
	Files manipulation commands (start with ~f~):

	\| Key Binding \| Description \|
	\|-------------+----------------------------------------------------------------\|
	\| ~SPC f c~ \| copy current file to a different location \|
	\| ~SPC f C d~ \| convert file from unix to dos encoding \|
	\| ~SPC f C u~ \| convert file from dos to unix encoding \|

	#!/bin/bash

	# From http://tech.serbinn.net/2010/shell-script-to-create-ramdisk-on-mac-os-x/
	#

	ARGS=2
	E_BADARGS=99

	if [ $# -ne $ARGS ] # correct number of arguments to the script;
	then

	worker_processes 3;

	events {
	worker_connections 1024;
	}

	http {
	passenger_root /usr/local/lib/ruby/gems/1.8/gems/passenger-3.0.7;
	passenger_ruby /usr/local/bin/ruby;

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048