I agree, but not with a popup and not if it make the first command fail: write whatever warning you want in the return we get from the command
Something like
#Warning: Do not share this key with anyone - they can take your bitcoins with this information.
5y1s5f4z3a2z1
I don't want to lose my time because of random people that use things they don't know how to use
It's like making cars to stop and to display a warning "You can't drive without a licence" each time you start them