Morgen Friedel morgenfriedel

Grab ffmpeg from https://www.ffmpeg.org/download.html

It's a command line tool which means you will have to type things with your keyboard instead of clicking on buttons.

The most trivial operation would be converting gifs:

ffmpeg -i your_gif.gif -c:v libvpx -crf 12 -b:v 500K output.webm

-crf values can go from 4 to 63. Lower values mean better quality.
-b:v is the maximum allowed bitrate. Higher means better quality.

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Please petition Github to support HTTPS on github pages: https://github.com/contact

Here's what I wrote:

Obviously, a lot of people want HTTPS for github pages:

isaacs/github#156

Until recently, that would be difficult to implement but, as it turns out, the implementation is pretty much complete:

https://letsencrypt.org >* https://github.com/letsencrypt/lets-encrypt-preview

Requirements

no upfront installation/agents on remote/slave machines - ssh should be enough
application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
configuration templating
environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
deployment process run from Jenkins

Solution

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

Orthodox C++

What is Orthodox C++?

Orthodox C++ (sometimes referred as C+) is minimal subset of C++ that improves C, but avoids all unnecessary things from so called Modern C++. It's exactly opposite of what Modern C++ suppose to be.

	# Enable and Disable Browser Caching with .htaccess

	## Enable Examples

	### 1 MONTH for static assets
	<filesMatch ".(ico\|pdf\|flv\|jpg\|jpeg\|png\|gif\|js\|css\|swf)$">
	Header set Cache-Control "max-age=2592000, public"
	</filesMatch>

	### 1 DAY for rss feeds and robots

	<?php

	/**
	* Get field key for field name.
	* Will return first matched acf field key for a give field name.
	*
	* ACF somehow requires a field key, where a sane developer would prefer a human readable field name.
	* http://www.advancedcustomfields.com/resources/update_field/#field_key-vs%20field_name
	*
	* This function will return the field_key of a certain field.

	/**
	* Make sure Graphicsmagick is installed on your system
	* osx: brew install graphicsmagick
	* ubuntu: apt-get install graphicsmagick
	*
	* Install these gulp plugins
	* glup, gulp-image-resize, gulp-imagemin and imagemin-pngquant
	*
	* Group images according to their output dimensions.
	* (ex: place all portfolio images into "images/portfolio"

	<IfModule mod_headers.c>
	Header set Connection keep-alive

	# Cache-control headers
	# 2 HOURS
	#<filesMatch "*">
	Header set Cache-Control "max-age=7200, must-revalidate"
	#</filesMatch>

	# 480 weeks - 290304000