Samba Setup - caternuson/rpi-camera-zero GitHub Wiki
Install
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install samba samba-common-bin
Config
/etc/samba/smb.conf
[pihome]
Comment = Pi shared folder
Path = /home/pi
Browseable = yes
Writeable = Yes
only guest = no
create mask = 0777
directory mask = 0777
Public = yes
Guest ok = yes
also set samba password
sudo smbpasswd -a pi
Restart
sudo service smbd restart
Connect from ubuntu
Files -> + Other Locations
smb://raspberrypi.local/pihome
...then login via dialogs