f4ktrh

# DISCLAIMER: 
# - Code is provided "as is" and any expressed or implied warranties are disclaimed.
# - Errors and omissions excepted.

# NOTE:
# - Read it carefully, some commands might have to be changed for your system.
#   - BLAS/LAPACK compilation commands will most likely have to be changed based on the
#     stackoverflow link below.
# - Running this shell file as a script is NOT recommended. Copy/pasting one command at a time is 
#   okay as long as you monitor the output for any possible errors/warnings.

lelandbatey

Description

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"

Results

steveklabnik

CHAPTERS=book/preamble.md \
				 $(wildcard book/chapter-*.md)

CONTENTS=book/title.txt \
				 $(CHAPTERS)

ALL_FILES=$(CHAPTERS) \
					book/metadata.xml \
					book/title.txt \
					cover.png				

benbalter

Here's an example of how to embed a Gist on GitHub Pages:

{% gist 5555251 %}

All you need to do is copy and paste the Gist's ID from the URL (here 5555251), and add it to a gist tag surrounded by {% and %}.

fredericoramos

==========================================================
UBUNTU - Configurando Teclado
Setup Brazilian Portuguese layout keyboard
==========================================================


# Install de VIM Editor
sudo aptitude install vim

# adicionar a numeração de linha

rmcgibbo

Scientific Python From Source

This document will walk you through compiling your own scientific python distribution from source, without sudo, on a linux machine. The core numpy and scipy libraries will be linked against Intel MKL for maximum performance.

This procedure has been tested with Rocks Cluster Linux 6.0 (Mamba) and CentOS 6.3.

Compiling Python From Source

jstn

/*
	JSTN THEME FOR LIMECHAT 1.0
	
	put this and the other thing in ~/Library/Application Support/LimeChat/Themes/
	
	bg          1a2230
	hlight      273146
	red         e44347
	purps       8b84d0
	fuscia      c2339a

arvearve

Mathematics: What do grad students in math do all day?

by Yasha Berchenko-Kogan

A lot of math grad school is reading books and papers and trying to understand what's going on. The difficulty is that reading math is not like reading a mystery thriller, and it's not even like reading a history book or a New York Times article.

The main issue is that, by the time you get to the frontiers of math, the words to describe the concepts don't really exist yet. Communicating these ideas is a bit like trying to explain a vacuum cleaner to someone who has never seen one, except you're only allowed to use words that are four letters long or shorter.

What can you say?

klange

Since this is on Hacker News and reddit...

• No, I don't distribute my résumé like this. A friend of mine made a joke about me being the kind of person who would do this, so I did (the link on that page was added later). My actual résumé is a good bit crazier.
• I apologize for the use of _t in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".
• Since people kept complaining, I've fixed the assignments of string literals to non-const char *s.
• My use of type * name, however, is entirely intentional.
• If you're using an older compiler, you might have trouble with the anonymous unions and the designated initializers - I think gcc 4.4 requires some extra braces to get them working together. Anything reasonably recent should work fine. Clang and gcc (newer than 4.4, at le

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a