# New extension: Command Autocompletion (Shell)

**URL:** <https://forum.codecrafters.io/t/new-extension-command-autocompletion-shell/4173>\
**Category:** Announcements\
**Created:** [January 22, 2025, 1:06pm UTC](https://forum.codecrafters.io/t/new-extension-command-autocompletion-shell/4173 "2025-01-22T13:06:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![andy1li](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.codecrafters.io/andy1li/32/10_2.png) [@andy1li](https://forum.codecrafters.io/u/andy1li)\
**Post date:** [January 22, 2025, 1:06pm UTC](https://forum.codecrafters.io/t/new-extension-command-autocompletion-shell/4173/1 "2025-01-22T13:06:06Z")

</div>

The next extension for the Shell challenge is now live: **Command Autocompletion**.

Command Autocompletion allows you to autocomplete commands and executable files.

 ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/2X/2/2b8f24a81699f0c625069dbc112c02c5150f8f59.jpeg)

Once you complete this extension, your shell implementation will function as follows:

```auto
$ ca
  ... press Tab, and your shell auto-complete to "cat"

```

Here’s the stage breakdown:

 ![image](https://canada1.discourse-cdn.com/flex003/uploads/codecrafters/original/2X/1/1757c3c7977bb139730e519f3f4dda799b459e38.png)

Please [give this a try](https://app.codecrafters.io/courses/shell/overview)and let us know how it can be improved! @ryan-gang (author of this extension) and I will be available here to help out!