An alternative to `cd`

cd.sh

# requirements
# fd: https://github.com/sharkdp/fd
# fzf: https://github.com/junegunn/fzf
function cd() {
  flag='-f'
  if [ $# -eq 0 ]; then
    builtin cd
  elif [ $# -eq 1 ]; then
    if [ $1 = "$flag" ]; then
      dirs=$(fd --type d . $HOME | fzf)
      if [ "$dirs" != '' ]; then
        builtin cd "$dirs"
      fi
    else
      builtin cd $1
    fi
  elif [ $2 = "$flag" ]; then
    target=${1:-$HOME}
    dirs=$(fd --type d . $target | fzf)
    if [ "$dirs" != '' ]; then
      builtin cd "$dirs"
    fi
  fi
}