## Add essential Samba groups
sudo groupadd --gid 512 smb-admins
sudo groupadd --gid 513 smb-users
sudo groupadd --gid 514 smb-guests
sudo groupadd --gid 515 smb-computers

## Add Samba group mapping
sudo net groupmap add ntgroup="Domain Admins" unixgroup=smb-admins rid=512
sudo net groupmap add ntgroup="Domain Users" unixgroup=smb-users rid=513
sudo net groupmap add ntgroup="Domain Guests" unixgroup=smb-guests rid=514
sudo net groupmap add ntgroup="Domain Computers" unixgroup=smb-computers rid=515

## Add Samba domain admin
sudo useradd -g 512 -d /dev/null -s /bin/false devadm
sudo passwd devadm
sudo pdbedit -a -u devadm

## Add Samba machine account
sudo useradd -g 515 -d /dev/null -s /bin/false devsrv01$
sudo pdbedit -a -u devsrv01$