# use

## Description

* Set the Cauldron repository associated to the given alias as the active Cauldron  

## Syntax

`ern cauldron repo use <alias>`

**Arguments**

`<alias>`

* Alias of the Cauldron repository to activate.

## Remarks

* This command will fail if the `alias` does not exist in the local collection of Cauldron repositories. &#x20;