network:
  version: 2
  renderer: NetworkManager
  ethernets:
     enp2s0:
            dhcp4: false
            dhcp6: false
            addresses: [147.102.37.118/24]
            gateway4: 147.102.37.200
            nameservers:
                addresses: [147.102.222.210,8.8.8.8]

sudo adduser mlab1
sudo adduser mlab2
sudo adduser mlab3
sudo apt-get install x2goserver x2goserver-xsession mate-session-manager
sudo cp EasyAVR.png /usr/local/
git clone https://git.microlab.ntua.gr/hmar/microlab_pcs.git
sudo cp ./microlab_pcs/* /usr/local/
sudo cp /usr/local/mlab_cleanup.sh /usr/local/bin/
sudo cp /usr/local/lightdm_cleanup.sh /usr/local/bin/

cd /usr/local/
sudo wget https://downloads.arduino.cc/arduino-1.8.13-linux64.tar.xz
sudo tar xf arduino-1.8.13-linux64.tar.xz
sudo ./arduino-1.8.13/install.sh

sudo cp /home/mlab1/.ssh/authorized_keys /home/splinter/.ssh/authorized_keys
sudo chown -R splinter:splinter /home/splinter/.ssh/
sudo chmod 600 /home/splinter/.ssh/authorized_keys


open arduino and file->preferences and enter Enter the following URL in Additional Boards Manager URLs
https://mcudude.github.io/MightyCore/package_MCUdude_MightyCore_index.json

Tools->board->board manager and search mightycore and install version 2.0.6

vim /home/splinter/.arduino15/packages/MightyCore/hardware/avr/2.0.6/boards.txt

16.menu.clock.8MHz_external_clock=8 MHz external clock
16.menu.clock.8MHz_external_clock.upload.port=UART0
16.menu.clock.8MHz_external_clock.upload.speed=38400
16.menu.clock.8MHz_external_clock.bootloader.sut_cksel_bits=010000
16.menu.clock.8MHz_external_clock.bootloader.high_fuses=0xd4
16.menu.clock.8MHz_external_clock.bootloader.file=optiboot_flash/{build.mcu}/optiboot_flash_{build.mcu}_{upload.port}_{upload.speed}_{build.f_cpu}.hex
16.menu.clock.8MHz_external_clock.build.f_cpu=8000000L


restart arduino and select tools->board->MightyCore->Atmega16 and
tools->8Mhz external clock