Here are this weekend’s riddles to entertain you through family time, shopping and recreation.

1: Conversions in 2017 brought sparse files and clones.

2: Sharing files on port 548 from System 6 to macOS 11.

3: Carnegie and Mellon distributed to thousands.

To help you cross-check your solutions, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.