I'm using zsh on Mac OS 10.6.8.
So, all of a sudden one of my machines asks me for confirmation every time I rm.
Frankly, I hate this with an abiding passion. I've never had a problem with rm, and I don't need to debate the potentialities.
First thing I did was which rm, which reports rm: aliased to rm -i.
Now, I've hunted high and low for this alias. zshrc, .config (which I don't have), the default zshrc files: everywhere I can think of. No mention of aliasing rm anywhere.
Is there a simple way to determine where this alias is being configured? Or to list all locations where zsh might be looking for config lines?
Nope, there's no way to know which startup file an alias has been configured from, sort of searching them yourself.
The Z-shell startup files can be found here.
A comment for the question suggests /etc/profile; this is incorrect (unless you're sourcing it yourself), as /etc/profile is a Bourne-type shell startup file.
If you can't find the place it's sourced, you could unset the alias [bottom paragraph] in ~/.zshrc: unset rm. That should work provided it's done after the alias is set.