skim sl4m

The reason why you might get certificate errors in Ruby 2.0 when talking HTTPS is because there isn't a default certificate bundle that OpenSSL (which was used when building Ruby) trusts.

Update: this problem is solved in edge versions of rbenv and RVM.

$ ruby -rnet/https -e "Net::HTTP.get URI('https://github.com')"
net/http.rb:917:in `connect': SSL_connect returned=1 errno=0 state=SSLv3
  read server certificate B: certificate verify failed (OpenSSL::SSL::SSLError)

You can work around the issue by installing a certificate bundle that you trust. I trust Mozilla and curl.

Do wtf you want to.

Top references

http://stackoverflow.com/questions/5502231/how-to-become-a-saml-service-provider?rq=1

SAML2 Notes

SAML2.0 is an XML based portocol using security tokens containing assertions to pass information about a principal (ex. end user) between a SAML authority (Idp-Identity provider, for planet labs, it is MS ADFS 2012 R2), and a SAML consumer (SP-service provider, for example, plotly On-Prem side authentication). The standrad was ratified as an OASIS standard in 03/2005, which eventually may be replaced by Oauth2 based OpenID.

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

	#
	# Halftoneapp.com Sample Bluepill Configuration File
	# Read more at: http://blog.halftoneapp.com
	#

	# Set paths
	home_dir = "/home/railsapp"
	rails_shared = "#{home_dir}/app/shared"
	unicorn_path = "/path/to/unicorn_rails"

	# define a method to run rake tasks
	def run_rake(task, options={}, &block)
	rake = fetch(:rake, 'rake')
	rails_env = fetch(:rails_env, 'production')

	command = "cd #{current_path} && #{rake} #{task} RAILS_ENV=#{rails_env}"
	run(command, options, &block)
	end