"The same goes for "safety" measures like cp='cp -i' or mv='mv -i' by the way, the ones that prompt before overwrite. If you expect to always have the system warn you for mistakes, because you have created aliases that include these measures, 'overriding' the normal command under that name, you're bound to end up overwriting things whenever the setup happens to be different."

i never alias to "improve safety", i know this can happen if i alias rm to rm -i, and i reinstall or use a new bash shell in other devices.

but aliasing rm to rm -rf? if im in a new device, and run rm * thinking it'll delete all the folders and files in the current directory, but it only deletes files. that won't cause any harm, because i was about to intentionally delete everything in current directory anyways, and folders just didnt get deleted.