Example Rake task to process ERB version of Monit Configuration File to leverage Ruby in the Config

generate.rake

namespace :monit do
  desc 'Generate the monit configuration'
  task :generate do
    require 'erb'
    PWD = ENV['PWD']
    CONFIG_TEMPLATE = File.join(PWD, 'config', 'monit.cfg.erb')
    templ = ERB.new(File.read(CONFIG_TEMPLATE))
    CONFIG = File.join(PWD, 'monit.cfg')
    File.open(CONFIG, 'w') {|f| f.write(templ.result) }
  end
end