Use Touch ID for Sudo on Mac (and survive system updates)

sudo.zsh

# source https://news.ycombinator.com/item?id=26302139
sudo() {
  unset -f sudo
  if [[ "$(uname)" == 'Darwin' ]] && ! grep 'pam_tid.so' /etc/pam.d/sudo --silent; then
    sudo sed -i -e '1s;^;auth       sufficient     pam_tid.so\n;' /etc/pam.d/sudo
  fi
  sudo "$@"
}