boris317

# statsd
sudo tcpdump -i eth0 -p -n -s 1500 -A udp port 8125

# statsd flushing to graphite
sudo tcpdump 'port 2005 or 2009' -s0 -A

# collectd
sudo tcpdump -i eth0 -p -n -s 1500 -A udp port 25827

dgmltn

#!/bin/sh

FILE_URL=http://speedtest.wdc01.softlayer.com/downloads/test10.zip

if [ -e /usr/bin/curl ] && [ -e /usr/bin/bc ] && [ -e /usr/bin/xargs ]; then
    echo "scale=2; `curl  --progress-bar -w "%{speed_download}" $FILE_URL -o /dev/null` / 131072"\
    | bc\
    | xargs -I {} echo {} mbps
elif [ -e /usr/bin/curl ]; then
    curl -o /dev/null $FILE_URL

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

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.

---

clarkdave

# The MIT License (MIT)

# Copyright (c) 2014 Dave Clark

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

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

jaygooby

#!/bin/bash
#
# Carries out a full mysqldump, calls percona-xtrabackup and then
# copies the sql dump, the percona backup and your mysql bin logs
# to S3 using s3cmd http://s3tools.org/s3cmd
# 
# TODO: extract out the S3 backup stuff to make it optional, and so
# other s3 programs can replace the s3cmd call.
# TODO: the if [ $? == 0 ] alert blocks should be a function
# TODO: make the if [ $? == 0 ] if [ $? != 0 ] more consistent - test

dansimau

Enable git-style colour output in regular diff

Mac OS X

1. Install colordiff using Homebrew:

    brew install colordiff
   

2. Add function to your ~/.bash_profile:

jch

require 'rack'

class RackApp
  def self.call(env)
    [200, {'Content-Type' => 'text/html'}, ['derp']]
  end
end

# For a full list of options, see
# http://www.ruby-doc.org/stdlib-1.9.3/libdoc/webrick/rdoc/WEBrick.html

mattetti

#########################################
# Very basic rack application showing how to use a router based on the uri
# and how to process requests based on the HTTP method used.
#
# Usage:
# $ rackup rack_example.ru
#
# $ curl -X POST -d 'title=retire&body=I should retire in a nice island' localhost:9292/ideas
# $ curl -X POST -d 'title=ask Satish for a gift&body=Find a way to get Satish to send me a gift' localhost:9292/ideas
# $ curl localhost:9292/ideas

mayoff

(* To the extent possible under law, Rob Mayoff has waived all copyright and related or neighboring rights to “AppleScript to make Google Chrome open/reload a URL”. This work is published from: United States. https://creativecommons.org/publicdomain/zero/1.0/ *)
tell application "Google Chrome"
	activate
	set theUrl to "http://tycho.usno.navy.mil/cgi-bin/timer.pl"
	
	if (count every window) = 0 then
		make new window
	end if
	
	set found to false