Linux file servers play an essential role. When using one of the popular Linux distributions, you have a few different file sharing options to choose from. Some of them are simple but not that secure. Others are highly secure, yet require some know-how to set up initially.
Despite the current core differences between Windows and Linux, choice of operating system is largely determined by non-technical factors. And yet the OSes have key technical differences that offer users significantly different experiences.
If you want to keep your enterprise IT skills up-to-date, you should familiarize yourself with these open source projects.