I've moved from aliases to scripts as I can't seem to have found the (if any exists...) way to ensure aliases can be used from within vim's ":!..." or ":'<,'>!.

I've moved from aliases to scripts as I can't seem to have found the (if any exists...) way to ensure aliases can be used from within vim's ":!..." or ":'<,'>!...", and as I often find myself wanting to either execute something while I'm amending code, or wanting to filter text with a purpose-built command, I end up writing (sometimes very short!) shell scripts.