A user wants to use several used computers to set up a low-cost lab at...

Linux is the best choice for a low-cost home lab built from used PCs because it is free/open source and widely used in server environments, making it ideal for practicing server administration and scripting. Quentin Docter explains that Linux was created as a free, open source OS and that it can function as both a workstation OS and a server OS depending on installation and configuration—exactly what a lab for “managing servers” needs. The All-in-One guide also highlights that Linux was made “freely available for everyone,” reinforcing why it fits a low-cost requirement (no licensing cost). Mike Meyers’ Lab Manual similarly describes Linux as a “popular, free, open source” OS and emphasizes the importance of the command line—critical for scripting and automation in admin tasks.

By comparison, macOS requires Apple hardware, Windows typically requires licensing costs, and ChromeOS is designed as a cloud-based/stateless OS centered on web apps and Google Drive, making it less suitable for broad server scripting labs.