wget

args = {...}

if args[1] == nil or args[2] == nil then
  return print ("usage: "..shell.getRunningProgram().." <url> <name>")
end

check = string.sub(args[1], 1, 7)
if check == "http://" then
  args[1] = string.sub(args[1], 8, #args[1])
end

http.request("http://"..args[1])
event,url,source = os.pullEvent()
if event == "http_success" then
    text = source.readAll()
    if fs.exists(args[2]) then
        fs.delete(args[2])
    end
    file = fs.open(args[2], "w")
    file.write(text)
    file.close()
    print("downloaded as "..args[2])
elseif event == "http_failure" then
  print "error"
end