utility-raspberry-pi

#!/bin/bash

# dependencies /////////////////////////////////////////////////////////////////

if [ -f "${HOME}"/.local/bin/frobulator ]
then
	rm -r -f "${HOME}"/.local/bin/frobulator
fi

if [[ -z $(command -v frobulator) ]]
then
	if [[ $(id -u -n) = "root" ]]
	then
		SUDO_HOME=/root

		USER="${SUDO_USER}"

		HOME=/home/"${USER}"
	fi

	if [[ -z $(command -v curl) ]]
	then
		yes | apt-get install curl
	fi

	if [ ! -d "${HOME}"/.local/bin ]
	then
		mkdir -p "${HOME}"/.local/bin
	fi

	curl -s -L get.frbltr.app > "${HOME}"/.local/bin/frobulator

	chmod +x "${HOME}"/.local/bin/frobulator
fi

. "${HOME}"/.local/bin/frobulator

# superuser ////////////////////////////////////////////////////////////////////

export self_arguments="${@}"

frobulator.escalate

# user ////////////////////////////////////////////////////////////////////////

deluser --remove-home ubuntu
groupdel -f ubuntu

chpasswd <<< root:09018610

# hostname ////////////////////////////////////////////////////////////////////

echo pi > /etc/hostname

hostnamectl set-hostname pi

# ssh /////////////////////////////////////////////////////////////////////////

cat << 'FILE' > /boot/firmware/ssh
FILE

# network /////////////////////////////////////////////////////////////////////

cat << 'FILE' > /etc/netplan/01-wlan0-config.yaml
network:
    version: 2

    ethernets:
      eth0:
        dhcp4: no
        dhcp6: no

    wifis:
      wlan0:
        dhcp4: no
        dhcp6: no

        addresses:
          - 192.168.86.21/24

        nameservers:
          addresses:
            - 8.8.8.8
            - 1.1.1.1

        routes:
            - to: default
              via: 192.168.86.1

        access-points:
          "WiFi":
            password: "y5cE?z>6&juDEm"
FILE

netplan generate
netplan apply

# configuration ///////////////////////////////////////////////////////////////

cat << 'FILE' > /boot/firmware/config.txt
[pi4]
max_framebuffers=2

[all]
arm_64bit=1
disable_splash=1
kernel=vmlinuz
cmdline=cmdline.txt
initramfs initrd.img followkernel
loglevel=1
dtoverlay=vc4-kms-v3d,noaudio
dtparam=audio=on
dtparam=i2c_arm=on
dtparam=spi=on
enable_uart=1

disable_overscan=1
hdmi_force_hotplug=1

over_voltage=8
arm_freq=2000
FILE

# packages ////////////////////////////////////////////////////////////////////

apt --assume-yes update
apt --assume-yes purge snap thin-provisioning-tools
apt --assume-yes upgrade

# restart /////////////////////////////////////////////////////////////////////

reboot