Command line tool to list memcache keys and to get the value of a specific key

memcache.rb

#!/usr/bin/env ruby
require 'net/telnet'
require 'lib/trollop'

opts = Trollop::options do
  banner <<-EOS
Command line tool to list memcache keys and to get the value of a specific key

Usage:
memcache [options]
where [options] are:
EOS
  opt :get, "Get the value for a specific key", :type => :string
  opt :host, "Set the Host", :default => "localhost", :type => :string
  opt :list_keys, "List local memcached keys"
  opt :port, "Set the port number", :default => 11211, :type => :integer
  opt :timeout, "Set the timeout in seconds", :default => 3, :type => :integer
end

Trollop::die :timeout, "must be greater than 0" if opts[:timeout] == 0

localhost = Net::Telnet::new("Host" => opts[:host], "Port" => opts[:port], "Timeout" => opts[:timeout])

if opts[:get]
  puts
  puts "Value for key #{opts[:get]}: "
  localhost.cmd("String" => "get #{opts[:get]}", "Match" => /^END/) { |c| puts c }
  puts
end

if opts[:list_keys]
  cache_dump_limit = 100
  slab_ids = []
  localhost.cmd("String" => "stats items", "Match" => /^END/) do |c|
    matches = c.scan(/STAT items:(\d+):/)
    slab_ids = matches.flatten.uniq
  end


  puts
  puts "Expires At\t\t\t\tCache Key"
  puts '-'* 80
  slab_ids.each do |slab_id|
    localhost.cmd("String" => "stats cachedump #{slab_id} #{cache_dump_limit}", "Match" =>
   /^END/) do |c|
      matches = c.scan(/^ITEM (.+?) \[(\d+) b; (\d+) s\]$/).each do |key_data|
       (cache_key, bytes, expires_time) = key_data
       humanized_expires_time = Time.at(expires_time.to_i).to_s
      puts "[#{humanized_expires_time}]\t#{cache_key}"
      end
    end
  end
  puts	
end

localhost.close

Hey thanks!
This looks very interesting but got this err:

/bin/memcachekval:4:in `require': no such file to load -- lib/trollop (LoadError)
from /bin/memcachekval:4

and I dont know any ruby so it could be a silly error but still... if you can help with it will be great,

Cheers!

You will need to install Trollop - http://trollop.rubyforge.org/