Here's one that doesn't hide the snaps but but still keeps it not cluttered (relies on ripgrep) :

function df { OUTPUT=$(/usr/bin/df $@) snaps=$(echo ${OUTPUT} | rg "^.+/snap/(.+)/.+$" -r '$1' | tr '\n' ' ') printf "\x1b[33m\x1b[1mFILTERING SNAP MOUNTPOINTS:\x1b[0m\x1b[33m\n$snaps\x1b[0m\n\n" >&2 echo $OUTPUT | grep -v "/snap/" }