You don’t even need to do it recursively:

sudo find / -path '/*/*' -prune -o -exec chmod 000 {} +

This is extremely fast.

Hadn’t realized what a gem “I don’t know” is until waaaaay too late. Saying “I don’t know” still often feels like a personal, albeit public, moral failure. Which is so dumb. But feels like it makes so much sense.

No. So I had to pull myself up the hills in a wagon and roll my own datetime parser

sudo chmod 000 / for security