An example http download with Progress Bar output in the command line with Ruby and the native `net/http` library...

download_progress.rb

#from http://stackoverflow.com/questions/2301009/get-file-size-before-downloading-counting-how-much-already-downloaded-httpru

require "net/http"
require "uri"
require "progressbar"

url = "http://ipv4.download.thinkbroadband.com/5MB.zip"

url_base = url.split("/")[2]
url_path = "/" + url.split("/")[3..-1].join("/")
@counter = 0

Net::HTTP.start(url_base) do |http|
  response = http.request_head((url_path))
  ProgressBar
  pbar = ProgressBar.new("file name:", response["content-length"].to_i)
  File.open("test.file", "w") { |f|
    http.get((url_path)) do |str|
      f.write str
      @counter += str.length
      pbar.set(@counter)
    end
  }
  pbar.finish
end

puts "Done."

Gemfile

source "https://rubygems.org"

gem "progressbar"

output.log

$ bundle exec ruby download_progress.rb
file name::    100% |oooooooooooooooooooooooooooooooooooooooooooo| Time:   0:00:00
Done.

reinier@Reiniers-MacBook-Pro progressbar % bundle exec ruby download_progress.rb download_progress.rb:14:in block in <main>': undefined method escape' for URI:Module (NoMethodError) from /Users/reinier/.rvm/rubies/ruby-3.0.0/lib/ruby/3.0.0/net/http.rb:960:in start' from /Users/reinier/.rvm/rubies/ruby-3.0.0/lib/ruby/3.0.0/net/http.rb:621:in start' from download_progress.rb:13:in `

'
reinier@Reiniers-MacBook-Pro progressbar %

Fixed, the URI.escape had been deprecated for a while it seems