Rename files in linux / bash using mv command without typing the full name two times

mv.sh

# Put this function to your .bashrc file.
# Usage: mv oldfilename
# If you call mv without the second parameter it will prompt you to edit the filename on command line.
# Original mv is called when it's called with more than one argument.
# It's useful when you want to change just a few letters in a long name.

function mv() {
  if [ "$#" -ne 1 ]; then
    command mv "$@"
    return
  fi
  if [ ! -f "$1" ]; then
    command file "$@"
    return
  fi

  read -ei "$1" newfilename
  mv -v "$1" "$newfilename"
}