if [ $commands[fasd] ]; then # check if fasd is installed
    fasd_cache="$HOME/.fasd-init-cache"
    if [ "$(command -v fasd)" -nt "$fasd_cache" -o ! -s "$fasd_cache" ]; then
      fasd --init auto >| "$fasd_cache"
    fi
    source "$fasd_cache"
    unset fasd_cache
    alias v='f -e vim'
    alias o='a -e open'
  fi