leophys/How_to_raspberry_debian.md

## How_to_raspberry_debian.md

      
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              How_to_raspberry_debian.md
            
          
    Flash debian on a microSD card to be used on a raspberry pi

Download

Download from here the appropriate image.
Flash

Flash the image on the appropriate device. Full device, not a partition, so no
number at the end of the device name, i.e. /dev/sdc, not /dev/sdc2:
$ xzcat <raspi_image>.img.xz | sudo dd of=/dev/<YOUR_DEVICE> bs=64k oflag=dsync status=progress

Add your key to authorized_key

Mount the newly created root partition (number 2, assuming the device is
/dev/sda) to a mount point:
$ MOUNTPOINT=/mnt/
$ sudo mount /dev/sda2 $MOUNTPOINT

Copy your ssh key to root's authorized_key:
$ sudo mkdir $MOUNTPOINT/root/.ssh
$ echo "<YOUR_SSH_PUBLIC_KEY> | sudo tee -a $MOUNTPOINT/root/.ssh/authorized_key"
$ sudo chmod 600 $MOUNTPOINT/root/.ssh/authorized_key
$ sudo chmod 700 $MOUNTPOINT/root/.ssh/

ssh.service unit is yet enabled. Modify $MOUNTPOINT/etc/ssh/sshd_config to
allow root login, uncommenting the line with PermitRootLogin to obtain:
PermitRootLogin prohibit-password

Configure network

Debian supports the old way via /etc/network/interfaces. Modify
$MOUNTPOINT/etc/network/interfaces.d/eth0:
auto eth0
iface eth0 inet static
    address <raspi_address>
    submask <netmask>
    gateway <gateway_address>

Most likely:

address: 192.168.1.i being i a number in the 1-255 range
netmask: 255.255.255.0
gateway: 192.168.1.1

Plug the raspberry

Plug the raspberry in a socket and attach the ethernet cable. ssh into it with