fedecarg

#!/bin/sh

# set unique $FILENAME
FILENAME=$(date +%d-%m-%y)-${APP_NAME}-${APP_ENV}

# set $LOG_URI (tail/download)
LOG_URI=https://bbc/logs/error_log/download/${APP_ENV}/error_log

# limit the $NUMBER_OF_LINES when processing large files (default: 4000 lines)
NUMBER_OF_LINES=${NUMBER_OF_LINES:=4000}

fedecarg

Generate an HTML file from a Git patch

Installation:

$ brew install colordiff
$ brew install gnu-sed
$ wget http://www.pixelbeat.org/scripts/ansi2html.sh -O /tmp/ansi2html.sh && chmod +x /tmp/ansi2html.sh

fedecarg

Extract links from a BBC responsive site

DOMAIN="m.bbc.co.uk"
SERVICE="hindi"
HTTP_USER_AGENT="Mozilla/5.0 (iPhone; Mobile; AppleWebKit; Safari)"
EXCLUDE_EXTENSIONS="\.\(txt\|css\|js\|png\|gif\|jpg\)$"
MAX_DEPTH="3"

wget --spider --no-directories --no-parent --force-html --recursive \

--level=$MAX_DEPTH --no-clobber \

fedecarg

Spike: Image-based BBC News website

• Create list of sites to visit: arabic, hindi, russian, mundo, etc.
• Define supported screen widths, for example: 176, 208, 240, 320, 352.
• Define the maximum size of an image. The current average size of a mobile page is 250 KB.
• Quality: 100% - File size: 822 KB: http://goo.gl/A4ldIF
• Quality: 50% - File size: 272 KB:http://goo.gl/AAbrY9
• Quality: 30% - File size: 193 KB: http://goo.gl/gOUkXK
• Crawl sites in a distributed, scalable and efficient way (scheduling policy, async requests, politeness, message queues, path-ascending crawling).
• Note: The app must run very well on Linux and should also be capable of test runs on OSX.

fedecarg

Get the absolute position of every link in an html document using JavaScript:

/**
 * The HTML <area> coords attribute needs the position of the left, top, right, bottom corner 
 * of the rectangle. Element.getBoundingClientRect returns a text rectangle object that encloses 
 * a group of text rectangles.
 */
function getElementAbsolutePosition(element) {
    var pos = {};

pos.left = 0;

fedecarg

Installing Ruby with RVM

Install RVM

federico@~$ echo insecure >> ~/.curlrc
federico@~$ curl -L https://get.rvm.io | bash -s stable --ruby
federico@~$ source ~/.bash_profile

Create a Gem set (Ruby and RoR)

fedecarg

Amazon EC2

Monitoring

ssh -i ~/.ec2/my.pem [email protected] "cat /var/log/secure | grep 'refused connect'"

When using SSH to run commands across multiple machines without exchanging your public key, you need to type in your password for each machine. A quick and simple way of setting this up is to create a public key:

ssh-keygen -t rsa

fedecarg

Search

grep -Irl --include=\*.txt "keyword" .

or

find . -type f -print0 | xargs -0 grep "keyword"

Search and Replace

fedecarg

def rgb_from_str(s):
    # s starts with a #.
    r, g, b = int(s[1:3],16), int(s[3:5], 16),int(s[5:7], 16)
    return r, g, b

def find_nearest_colour(R,G, B, colorD):
    mindiff = None

    for d in colorD:
       r, g, b = rgb_from_str(colorD[d])

fedecarg

function rgbToHex(r, g, b) {
    return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}