Yes. The references to the inputs.conf configuration file is at http://docs.splunk.com/Documentation/Splunk/6.1.2/admin/inputsconf
In the monitor section:
* This directs Splunk to watch all files in
* You must specify the input type and then the path, so put three slashes in your path if you are starting
at the root (to include the slash that goes before the root directory).