Failure - ffi / bel.rb does not compile on MacOSX ruby

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HTML:

<a href="https://asciinema.org/a/17658" target="_blank"><img src="https://asciinema.org/a/17658.svg" /></a>

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Markdown:

[![asciicast](https://asciinema.org/a/17658.svg)](https://asciinema.org/a/17658)

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<script src="https://asciinema.org/a/17658.js" id="asciicast-17658" async="true"></script>

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Download

Replay in terminal

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asciinema play 17658.cast

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Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="/assets/asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="/assets/asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/17658.cast',
      document.getElementById('player'),
      { cols: 152, rows: 33 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/17658 demo.gif

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Or, if you already downloaded the recording file:

agg demo.cast demo.gif

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Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.