As a hobby, I try to make something useful out of old Macs my clients ask me to wipe clean after upgrading to new Macs. One that was particularly interesting was a 24" iMac 6,1 with 3 GB RAM (the last white plastic iMac with Intel Core 2 Duo). Other than not being able to run anything newer than 10.7.5 (so no modern software available), it's in nice shape.Well, since we have a Linux thread now, I've been meaning to ask - how does Linux compare with macOS for running a server (file sharing and CalDAV/CardDAV mainly). Does it run any leaner (RAM, CPU usage, storage usage)? Couldn't be anymore user unfriendly than macOS with the latest Server, at least for CalDAV.
I found a 32-bit Mint Linux distro (v18.3) that runs very nicely on it. Wiped it clean beforehand, so there's no macOS at all. Now it runs all the latest (Linux) software, including Chromium and Thunderbird, and it can even play nicely file-sharing with my newer Macs and PCs. It's now a secure environment.
Not sure yet where it will end up but it's great that Linux keeps a 12 year old "obsolete" Mac running properly.