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Any "professional" who can't spend two minutes googling how to reset this doesn't deserve the title.

"Professional use" just means to use in your profession, not that they are claiming to be an IT expert.

In this case, it means they are typing Unix commands into a shell. That suggests that their profession involves IT.

I'd argue that fighting your tools is the _least_ acceptable in a professional setting.

Some people complain that microwaves kill cats instead of drying them, YMMV.