sharing a folder on Raspberry pi

 https://subscription.packtpub.com/book/iot-and-hardware/9781849696623/1/ch01lvl1sec19/sharing-the-home-folder-of-the-raspberry-pi-with-smb

describes how to share with a password.

But we want to do it without password.

public to "yes" in

https://pimylifeup.com/raspberry-pi-samba/

But didn't do. Instead, needed smbpasswd step.