Currently, there is no Clemson Box App for Linux. Here are some instructions for Accessing Clemson Box account in Linux via WebDAV using command-line mount and other tools.
There are two tricks to accessing a Clemson Box folder in Linux using WebDAV
There are some other possible ways to get access to Box in Linux:
( Just FYI, the first of those pages apparently refers to SFTP when it should refer to FTPS.)
This is the link to a Citrix knowledge base article that worked for Fedora/Red Hat (and would work with any distribution). Ubuntu apparently has a package of add-on certificates that solves the problem.
For Ubuntu (and some other possibly useful info:
Article ID: 677
Created: July 11, 2018
Last Updated: July 27, 2018
Author: Laurie Sherrod
Online URL: https://hdkb.clemson.edu/phpkb/article.php?id=677