Roundcube Config File

Can someone tell me where the Roundcube config file is located? I want to make an edit and don't know where to go or what file name to look for?

After searching a little, found the answer in case anyone else needs it. I was trying to create the default mail folders automatically.

Open the /etc/roundcube/main.inc.php.dist" file and go to the User Interface section (usually around 425) and change the following variable to true.

$rcmail_config['create_default_folders'] = true;

Make that file I was referring to,"main.inc.php"