I freed 80GB on my Mac with a bash script — no app, no subscription

My Mac mini was telling me I had over 80GB of "System Data" to free up. CleanMyMac wanted €34/year. DaisyDisk wanted €10 just to tell me where the files were. So I spent an evening writing a bash script instead. The problem with "System Data" on macOS If you've ever opened System Settings → General → Storage and seen a huge "System Data" slice, you know the feeling. macOS is notoriously vague about what's in there. The real culprits are usually: Time Machine local snapshots — macOS keeps these s