Code Golf: File extension

t(){ echo ${1##*.};}
for f in hi.txt carrot.meme lol what..is..this..file \
         .bashrc T00M@n3KaPZ.h0wC[]h agent.000; do
  printf '%s -> %s\n' "$f" "$(t "$f")"
done

Bash

INFO

Quick actions

Code Golf: File extension

Snippet info