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kitop /
Created Mar 31, 2017
Template Bash Script
#!/usr/bin/env bash
set -euo pipefail
# Taken from
#/ Usage:
#/ Description:
#/ Examples:
#/ Options:
chrismccord /
Last active Oct 27, 2019
Phoenix 1.2.x to 1.3.0 Upgrade Instructions

If you want a run-down of the 1.3 changes and the design decisions behidn those changes, check out the LonestarElixir Phoenix 1.3 keynote:

To use the new project generator, you can install the archive with the following command:

$ mix archive.install

Bump your phoenix dep

Phoenix v1.3.0 is a backwards compatible release with v1.2.x. To upgrade your existing 1.2.x project, simply bump your phoenix dependency in mix.exs:

vasanthk / System
Last active Jan 17, 2020
System Design Cheatsheet
View System

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?

Hello, visitors! If you want an updated version of this styleguide in repo form with tons of real-life examples… check out Trellisheets!

Trello CSS Guide

“I perfectly understand our CSS. I never have any issues with cascading rules. I never have to use !important or inline styles. Even though somebody else wrote this bit of CSS, I know exactly how it works and how to extend it. Fixes are easy! I have a hard time breaking our CSS. I know exactly where to put new CSS. We use all of our CSS and it’s pretty small overall. When I delete a template, I know the exact corresponding CSS file and I can delete it all at once. Nothing gets left behind.”

You often hear updog saying stuff like this. Who’s updog? Not much, who is up with you?

lelandbatey /
Last active Dec 21, 2019
Whiteboard Picture Cleaner - Shell one-liner/script to clean up and beautify photos of whiteboards!


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:

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



Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

nu7hatch / _utils.bash
Created Apr 15, 2013
Utilities for setup scripts.
View _utils.bash
# --- Utilities used across all the scripts.
set -e
set -o pipefail
# Prints spaces as a prefix to the command's output.
function prefixed {
sed -e "s/^/ /"
ndbroadbent / deploy.rake
Created Sep 28, 2012
Rake task for precompiling assets locally before deploying to Heroku
View deploy.rake
require 'fileutils'
# Warning: The following deploy task will completely overwrite whatever is currently deployed to Heroku.
# The deploy branch is rebased onto master, so the push needs to be forced.
desc "Deploy app to Heroku after precompiling assets"
task :deploy do
deploy_branch = 'heroku'
remote = 'heroku'
deploy_repo_dir = "tmp/heroku_deploy"
djanowski / gist:3750231
Created Sep 19, 2012
Why I don't use...
View gist:3750231

Why I don't use...

I'm numbering my arguments just to be able to reference them. Order does not reflect priority.


  1. It's monolithic.

  2. It's huge, both in terms of complexity and in resulting file size.

joho / deploy.rb
Created Sep 13, 2012
How to serve emergency "signed out" views from page cache without affecting signed in users in rails.
View deploy.rb
set :path_to_repo, "/path_to_repo/"
set :running_app_user, "appusername"
namespace :webscale do
desc "Cache a signed out version of the path. Usage: cap webscale:signed_out_cache_page -s path_to_cache=/films/on_netflix"
task :signed_out_cache, roles: :app do
cache_base_path = "#{path_to_repo}/public/signed_out"
cached_destination_path = "#{cache_base_path}#{path_to_cache}.html"
working_path = "#{cached_destination_path}.tmp"
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