check the PERMANENTFLAGS of a IMAP server.

check_imap_permanentflags.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'highline'
require 'net/imap'
require 'optparse'

$config = {}
$config[:ssl] = true
opts = OptionParser.new
opts.on("-h", "--host HOST"               ){|v| $config[:host] = v   }
opts.on("-p", "--port PORT"    , Integer  ){|v| $config[:port] = v   }
opts.on("-u", "--user USER"               ){|v| $config[:user] = v   }
opts.on(      "--nossl"                   ){|v| $config[:ssl]  = false}
begin
  opts.parse!(ARGV)
rescue OptionParser::ParseError => err
  print opts.help
  print "\nerror: " + err + "\n"
  exit
end

$config[:port] = $config[:ssl] ? 993 : 143  if $config[:port].nil?
$config[:host] = HighLine.new.ask("Host: ") if $config[:host].nil?
$config[:user] = HighLine.new.ask("User: ") if $config[:user].nil?
$config[:pass] = HighLine.new.ask("Pass: ") {|q| q.echo = '*'} if $config[:pass].nil?

imap = Net::IMAP.new($config[:host], $config[:port], $config[:ssl])
imap.login($config[:user], $config[:pass])

imap.select("INBOX")
p imap.responses["PERMANENTFLAGS"]

imap.disconnect