Now that Radiator supports transaction signing, I thought I'd combine it with the existing streaming capability.  So this is a simple bot that mirrors other users and votes on the same things (posts and comments).  It only upvotes if the original vote is an upvote.

---

To use this [Radiator](https://steemit.com/steem/@inertia/radiator-steem-ruby-api-client) bot:

##### Linux

```bash
$ sudo apt-get install ruby-full git openssl libssl1.0.0 libssl-dev
$ gem install bundler
$ bundle config git.allow_insecure true
```

##### macOS

```bash
$ gem install bundler
```

I've tested it on various versions of ruby.  The oldest one I got it to work was:

`ruby 2.0.0p645 (2015-04-13 revision 50299) [x86_64-darwin14.4.0]`

First, make a project folder:

```bash
$ mkdir radiator
$ cd radiator
```

Create a file named `Gemfile` containing:

```ruby
source 'https://rubygems.org'
gem 'radiator', github: 'inertia186/radiator'
```

Then run the command:

```bash
$ bundle install
```

Create a file named `tail_voters.rb` containing:

```ruby
require 'rubygems'
require 'bundler/setup'

Bundler.require

wif = 'Your Posting Wif'
voter = 'your-account'
list = ['inertia', 'fyrstikken']
url = 'https://steemd.steemit.com'
stream = Radiator::Stream.new(url: url)

puts "Watching for votes by: #{list}"

stream.operations do |operation|
  begin
    op_key = operation.keys.first
    op_value = operation.values.first

    print '.'

    next unless op_key == :vote
    next unless list.include? op_value.voter
    next unless op_value.weight > 0

    author = op_value.author
    permlink = op_value.permlink
    puts "\nVoting on: #{author}/#{permlink}"

    tx = Radiator::Transaction.new(wif: wif, url: url)
    vote = {
      type: :vote,
      voter: voter,
      author: author,
      permlink: permlink,
      weight: 10000
    }
    
    op = Radiator::Operation.new(vote)
    tx.operations << op
    tx.process(true)
  rescue => e
    puts e.inspect
  end
end
```

Then run it:

```bash
$ ruby tail_voters.rb
```

The above example would vote for anything `inertia` and `fyrstikken` vote for.

![ruby](http://www.steemimg.com/images/2016/08/24/1024px-Ruby_logo.svgdcc20.png)

See my previous Ruby How To posts in: [#radiator](https://steemit.com/created/radiator) [#ruby](https://steemit.com/created/ruby)