Creates qmail aliases (see http://postpostmodern.com/downloadable/quick-email-aliases-on-media-temple/)

ealias.rb

#!/usr/local/bin/ruby
require 'fileutils'
unless ARGV.size > 1
  puts "Usage: #{__FILE__} [email protected] email [ email ] ..."
  exit
end
QMAIL_DIR = "/var/qmail/mailnames"

alias_address = ARGV.shift
domain = alias_address.match(/[^@]+$/).to_s
path = File.join(QMAIL_DIR, domain)

alias_name = alias_address.match(/^\w+/).to_s
file_name = File.join(path,".qmail-#{alias_name}")

unless File.directory?(path)
  puts "The domain #{domain} doesn't exist! Aborted."
  puts "#{path} doesn't exist!"
  exit
end
if File.exists?(file_name)
  puts "This alias already forwards to:"
  puts IO.read(file_name)
  print "Add, Overwrite, Cancel? [Aoc]"
  input = STDIN.gets.chomp.strip
end
case input
  when "c", "C"
    puts "  Cancelled"
    exit
  when "O", "o"
    FileUtils.rm_f(file_name)
end
ARGV.each do |email|
  `echo "&#{email}" >> #{file_name}`
end
FileUtils.chmod(0600, file_name)
FileUtils.chown('popuser', 'popuser', file_name)
puts "Alias added"