'cp'_'mv'_'ln'_shorthand.md

cp, mv, ln shorthand

with brace expansion

# /path/filename.ext

mv /path/filename.{ext,new}      # /path/filename.new
mv /path/filename.new{,.bak}     # /path/filename.new.bak
mv /path/filename.new.bak{.bak,} # /path/filename.new
mv /path/file{name.n,xx.xx}ew    # /path/filexx.xxew