Instant ZSH Startup

by romka 5 years ago

GNU/Linux ◆ xterm-256color ◆ zsh 5280 views

Make zsh start INSTANTLY with this one weird trick.

1. Download instant-zsh.zsh.

curl -fsSL -o ~/instant-zsh.zsh https://gist.github.com/romkatv/8b318a610dc302bdbe1487bb1847ad99/raw

2. Add this at the top of your ~/.zshrc.

source ~/instant-zsh.zsh
instant-zsh-pre "%n@%m %~%# "

Adjust the argument of instant-zsh-pre to be similar to your real prompt. For example, if you are using Powerlevel10k with lean two-line prompt, this works well:

instant-zsh-pre "%B%39F${${(V)${(%):-%~}//\%/%%}//\//%b%31F/%B%39F}%f"$'\n'"%76F❯%f "

3. Add this at the bottom of your ~/.zshrc.

instant-zsh-post

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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 274255.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/274255.cast',
      document.getElementById('player'),
      { cols: 105, rows: 25 }
    );
  </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/274255 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.