The Sickbeard API[1] offers no interface to trigger the post-processing of downloaded episodes. This simple script uses Mechanize in order to start the process via the web app. [1] http://sickbeard.com/api/

postprocess.rb

require "rubygems"
require "mechanize"

site = 'http://pi:9094/home/postprocess/'
user = 'xbian'
pass = 'raspberry'

downloads = '/home/xbian/downloads/tv'

agent = Mechanize.new
agent.add_auth(site, user, pass)
agent.get(site) do |page|
  processed = page.form_with(:name => 'processForm') do |processing|
    processing.dir = downloads
  end.submit

  puts processed.search("#content")
end