ClamAV virus scan

#!/usr/bin/ruby

require 'socket'

hostname = ARGV[0]
control_port = ARGV[1]
filename = ARGV[2]
begin
  control_socket = TCPSocket.new( hostname, control_port )
  control_socket.send( "STREAM\n", 0)
  port = control_socket.gets.chomp.split[1]
  stream_socket = TCPSocket.new( hostname, port )

  File.open(filename, 'r') do |f|
    while data = f.read(4000)
      stream_socket.send( data, 0)
    end
  end

  stream_socket.close
  response = control_socket.gets
  control_socket.close
  
  if response.include?('FOUND')
    puts "A virus was found: #{response}"
  else
    puts "No virus was found"
  end
rescue Exception => e
  puts "Exception encountered, #{e.inspect}"
end