Nothing fancy. It works.
#!/usr/bin/ruby1.8
# ed2k link helper for Opera
host = '10.10.1.1'
link = ARGV.first
require 'net/telnet'
core = Net::Telnet::new(
'Host' => host,
'Port' => 4000
)
core.cmd("dllink #{link}")
core.cmd('q')
core.close