> ## Documentation Index
> Fetch the complete documentation index at: https://docs.runloop.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Configuring your bash environment

> Configuring the bash environment on your devboxes

The Runloop Devbox environment is configured to source the `~/.bash_profile` file for all ssh instances and execs. This file should be placed in the home folder for the devbox user (`/home/user/` by default) and will be sourced by the devbox environment.

Runloop devboxes don't have a `~/.bash_profile` file by default. You can create one in the home folder for the devbox user and it will be sourced by the devbox environment. Runloop also supports specifying `environment_variables` when launching a devbox.

Our current logic will initialize `environment_variables` arguments and then source the `~/.bash_profile` file if it exists.

**`~/.bash_profile` variables will override the equivalent `environment_variables` arguments if they both exist.**

Ex: setting `RUNLOOP_API_KEY=123` in `~/.bash_profile` and launching a devbox with `RUNLOOP_API_KEY=456` will result in `RUNLOOP_API_KEY` evaluating to `123` in the devbox.