first Boot

apt update && apt dist-upgrade
apt install aptitude btrfs-progs snapper snapper-gui grub-btrfs findutil snap sshd mysql pip nodejs wpa_supplicant cups

Network Setup

//Set Hostname
echo 'myHostname'> /etc/hostname

//set my Network - in my case Wifi and Ehternet

//Ethernet eth0 
nano /etc/network/interfaces
==> iface eth0 inet static // this means static IP no DHCP 
==>        address 12.8.2.30/24 //IP Adress / \24 Networkmask

//WIFI wlan0
wpa_passphrase wifiNetworkName wifiPassword |tee /etc/wpa_supplicant.conf\
wpa_supplicant -B -c /etc/wpa_supplicant.conf -i wlan0
systemctl enable wpa_supplicant
systemctl start wpa_supplicant

/* Network Troubleshooting 
   No Route to Internet Sites 
   Set DNS- Server in resolv.conf
*/
echo "nameserver 1.1.1.1" >> /etc/resolv.conf\
echo "nameserver 8.8.8.8" >> /etc/resolv.conf\

Printer

Download ur printers driver on vendors Site and follow the instruction. I use cups to configure my printer and system-printer…

apt install system-config-printer cups

//Cups
systemctl enable cups-browsed.service
systemctl start cups-browsed.service

//controll if cups-browser running
netstat-tulpn |grep 631
//or
ss -antpl |grep 631 

Open ur Browser http://localhost:631 search an configure ur printer

Scanner

Download ur driver on vendors Site and follow the instructions. I use a GUI „Xsane“ for scanning but u can also scan from console

apt install libsane sane xsane

Check Snapshot

snapper list

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Next: customizing, software, backups