> For the complete documentation index, see [llms.txt](https://manuscript.knightsoftheeditingtable.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manuscript.knightsoftheeditingtable.com/extensions/watchtower/settings/regex-folder-name-filter.md).

# Regex folder name filter

Regular expressions  (shortened as **regex** or **regexp**) are patterns used to match character combinations in strings.

![](/files/862DPOGfyG4e88x2MpoT)

To use regex filter enclose search pattern in slashes: "/temp/, "/\d/".

For example you have folders generated by Media Encoder, it takes project name and attaches "\_AME" to the end of it:

> **"Project\_1\_AME", "Project\_2\_AME", "Project\_3\_AME", etc**

Instead of strictly defining name filter for each folder, you can set one regex filter:

> **"/\_AME/"**

### Example usage:

* **/\_ame/** — filter folder that has “\_ame” in name: “project\_ame”, “south\_America”, “\_amethyst"
* **/\_ame$/** — filter folder that has “\_ame” at the end of the name:  “project\_AME”
* **/^\_ame/** —filter folder that has “\_ame at the start if the name: “\_amethyst"
* **/\d/** — filter folder that has any digit in name: “100\_images”, “image\_5\_best”

{% hint style="info" %}
To learn more about regex:\
<https://en.wikipedia.org/wiki/Regular_expression>

Test regex online:\
<https://regex101.com>
{% endhint %}