Hoseong Liam Hwang thefron

Preface

Below are the steps I took to install ffmpeg, ffmpegthumbnailer, and heroku to use with carrierwave-video and carrierwave-video-thumbnailer gems on my heroku app. I found there was no documentation to do exactly this, so I hope this is helpful for other people (and will save them the countless hours it took me to finally get it to work)

carrierwave-video gem: https://github.com/rheaton/carrierwave-video
carrierwave-video-thumbnailer gem: https://github.com/evrone/carrierwave-video-thumbnailer

These are the libraries you will end up installing to get all of this to work.

x264

기술 문서를 쓸 때 주의해야 할 몇 가지

독자 배려

자신의 생각과 할 일을 정리하는 것이 기술 문서의 목표가 될 수는 없다. 먼저 독자를 식별하라. 그리고 독자를 배려하고 독자 입장을 생각하며 문서를 작성하라.

텍스트 파일의 장점

중요한 정보를 위키나 깃(Git)에서 텍스트로 작성하지 않고, 워드나 파워포인트 같은 이진 문서로 작성할 때마다 당신의 동료는 접근성, 가시성, 버전 관리 등 다양한 문제로 고생할 것이다.

RAILS & POSTGRES WITH WERCKER AND DATABASE_URL

Basically, if you prefer to use DATABASE_URL in your application better than creating the whole database.yml thing, set the following ENV variable in your wercker app settings:

APP_POSTGRES_PASSWORD (required)
APP_POSTGRES_USER (optional)
APP_POSTGRES_DB (optional)
DATABASE_URL (value below)

name: DATABASE_URL

`docker-machine` import/export

Script to import and export docker-machine configurations to sync between hosts/collaborators

Export (on host A)

$ docker-machine ls
NAME       ACTIVE   DRIVER         STATE     URL                            SWARM   DOCKER    ERRORS
dev        -        digitalocean   Running   tcp://example.com:2376                 v1.10.1

	class MyCustomCell < UITableViewCell

	# This method is used by ProMotion to instantiate cells.
	def initWithStyle(style_name, reuseIdentifier: reuseIdentifier)
	super
	stylish
	self
	end

	# A delegate method when the user clicks the Row(it's blue by default)

	# Path to your oh-my-zsh configuration.
	ZSH=$HOME/.oh-my-zsh

	# Set name of the theme to load.
	# Look in ~/.oh-my-zsh/themes/
	# Optionally, if you set this to "random", it'll load a random theme each
	# time that oh-my-zsh is loaded.
	ZSH_THEME="robbyrussell"

	# Example aliases

	# Install Git needed for Git based gems
	packages:
	yum:
	git: []

	#!/bin/bash
	# from here: http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
	# and here: https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
	###############################################
	# To use:
	# wget https://gist.githubusercontent.com/four43/e00d01ca084c5972f229/raw/install-redis.sh
	# chmod 777 install-redis.sh
	# ./install-redis.sh
	###############################################
	echo "*****************************************"

	//usr/bin/env go run $0 "$@"; exit
	package main

	import (
	"fmt"
	"os"
	)

	func main() {
	fmt.Println("Hello world!")

	"""
	Copies all keys from the source Redis host to the destination Redis host.
	Useful to migrate Redis instances where commands like SLAVEOF and MIGRATE are
	restricted (e.g. on Amazon ElastiCache).

	The script scans through the keyspace of the given database number and uses
	a pipeline of DUMP and RESTORE commands to migrate the keys.

	Requires Redis 2.8.0 or higher.