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I like to use "trash" (i.e. "put in the Trash") instead of "rm" (i.e. "remove permanently").

For Linux there's a suite called "trash-cli" (on Ubuntu the binary is called "trash-put" so you will probably want to set up an alias). I guess there's something similar for OSX?

There is also libTrash.so, that when loaded replaces rm entirely.

Yet, I've lost interest since I got a nice backup routine.

There's rmtrash, which is in Homebrew.

you could just use: mv * ~/.Trash

I have an alias set for rm as follows, for the root account:

# alias rm

alias rm='rm -i'

It helps to prevent some stupidity, sometimes. Better than nothing.

zsh, or at least oh-my-zsh, asks you for confirmation if your rm command looks dangerous.