Don’t go by any general rules. If you are unsure, take it home and sit down with your mushroom guide book and go through all the ways of identifying it and separating it from similar species until you are sure, or you give up and throw it away.

Just off the cuff here are a couple of examples that violate the advice given above, golden chanterelle is very spicy but perfectly edible; gyromitra esculenta (“false morel”) does not have lamelles, is supposed to be mildly flavoured, but is deadly toxic.

It’s only 7.4% if you’re discounting the large service sector and looking only at goods (which may be what people mean by “exports”, idk). That’s why our numbers differ, it’s 4.2% of all exports, and 7.4% of exported goods.

Oil and gas products account for 4.2% of Sweden’s exports. The gas exports alone almost rival those of dairy and eggs! Truly a petrostate if I ever saw one

Are you perhaps thinking of a different country?

ls -r actually lists entries in reverse order! It needs -R as well.

cp and rm accept either.

Looking at some man pages the only commands I found where -R didn’t work were scp and gzip where it doesn’t do anything, and rsync where it’s “use relative path names”.

(Caveat: BSD utils might be different, who knows what those devils get up to!)

Not chmod related, but I’ve made some other interesting mistakes lately.

Was trying to speed up the boot process on my ancient laptop by changing the startup services. Somehow ended up with nologin never being unset, which means that regular users aren’t allowed to log in; and since I hadn’t set a root password, no one could log in!

Installed a different version of Python for a project, accidentally removed the wrong version of Python at the end of the day. When I started the computer the next day, all sorts of interesting things were broken!

Aha! I didn’t get that you meant the issue was accidentally using -r instead of -R since both you and OP wrote the upper case one.

I’m a lot more used to -R so I instead get caught off by commands where that means something other than recursive :)

I mostly use symbolic mode and honestly don’t get why everyone else seems to use octal all the time.

That’s what -R does in chmod as well? I feel like something here is going completely over my head. Or are you-all using another version of chmod?

People think it’s about Stallman being bitter. But it’s because GNU is a political project with the goal of total user freedom and control over their computer. The software is a step on the way there. But if people use free software without understanding, valuing or taking advantage of the freedom it gives them, the GNU project has failed.