Shred a file to hide its contents

by FelixBauer 5 days ago

GNU/Linux ◆ foot ◆ bash 13 views

Within a small 10MB fat32 file system is a file with text content, that is edited and shredded and deleted. During the process we read the (strings) contents of the file system as well as the inode number of the file. The content is versioned on the file system and only the last version is deleted.

That behaviour results from Vim creating a temporary file that gets moved into the location of the original on save quit.

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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 697662.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/697662.cast',
      document.getElementById('player'),
      { cols: 116, rows: 31 }
    );
  </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/697662 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.