Vanilla Go Multi-Version Manager: Switch between Go versions seamlessly!

by nathanielvarona 4 months ago

macOS ◆ xterm-256color ◆ zsh 66 views

Watch how I built a custom Go version manager using only vanilla Go and shell scripting. With this tool, you can easily install, switch between, and uninstall multiple Go versions on your system. No external dependencies required! See how I demonstrate the tool’s features, including installing Go 1.22.2, switching to it, running a Go program, and then switching back to the system-installed Go version. A must-see for any Go developer who wants to manage multiple Go versions with ease!

Check out the source code: Included in my #dotfiles collection on Github: https://github.com/nathanielvarona/dotfiles/blob/master/.scripts/source/go-tool.source.sh

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You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 665399.cast

If you don't have asciinema CLI installed then see installation instructions.

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="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/665399.cast',
      document.getElementById('player'),
      { cols: 100, rows: 30 }
    );
  </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/665399 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

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.