> write my-iso ./zip.zip onto external hard drive

Dang! not that one, the other one!

> zip my-folder into my-zip.tar with compression level 9

What do you mean, I don't have write permissions in the current working directory? I meant for you to put the output in $HOME, i mean /tmp, i mean /var/tmp, i mean on the external hard drive, no other other one.

> git delete commit 1a4db4c

What did you do? I didn't mean delete it and erase it from the reflog and run gc! I just mean "delete it" the way any one would ever mean that! I can never get it back now!

Things that definitely need interactive prompts before running or fail out of ambiguity otherwise. Let's not pretend these are impossible problems to overcome design-wise.