Launch Cpcdos VM on GNU/Linux

cpcdos-setup.sh

#!/bin/bash

link="https://dl.cpcdos.net/PUBLIC/cpcdososx/binary/OS2.1__BETA1.5/[PUBLIC]%20Cpcdos%20OS2.1%20Beta%201.5%20[15-AUG-2021].zip"

if which doas &>/dev/null; then
	sudo=$(which doas)
elif which sudo &>/dev/null; then
	sudo=$(which sudo)
else
	echo [-] Please install sudo or doas
	exit 1
fi

function command_not_found 
{
	echo [-] Please install $1
	exit 1
}

function download 
{
	wget $link -O cpcdos.zip || command_not_found wget
	unzip cpcdos.zip || command_not_found unzip
	find ./ -name "*.ova" -exec mv {} ./ \; 2>/dev/null
	rm -rf \[PUBLIC\]*
	tar -xvf *.ova
	rm *.mf *.ova *.ovf
	qemu-img convert -f vmdk -O qcow2 PUBLIC\ Cpcdos\ OSx-disk001.vmdk cpcdos.qcow2 || command_not_found qemu-img
	rm *.vmdk *.zip
}

function umount-cpcdos
{
	$sudo umount ./cpcdos
	$sudo qemu-nbd --disconnect /dev/nbd0 || command_not_found qemu-nbd
	$sudo rmmod nbd
	rmdir ./cpcdos
}

function usage
{
	echo "$0 [ -m / --mount | -r / --run | -u / --umount ]"
}


if [ ! -f cpcdos.qcow2 ]; then
	download
fi

if [ $# -eq 0 ]; then
	usage
	exit 1
fi

case $1 in
	-m | --mount)
		if lsmod | grep qemu-nbd &>/dev/null ; then
			echo [?] Qemu module loaded
		else
			$sudo modprobe nbd max_part=8 || command_not_found qemu-nbd
		fi
		
		$sudo qemu-nbd --connect=/dev/nbd0 ./cpcdos.qcow2 || command_not_found qemu-nbd

		if [ ! -d ./cpcdos ]; then
			mkdir ./cpcdos
		fi

		$sudo mount /dev/nbd0p1 ./cpcdos -o uid=$UID,gid=$(id -g)

	;;

	-u | --umount)
		umount-cpcdos
	;;
		
	-r | --run)
		if [ -d ./cpcdos ]; then
			umount-cpcdos
		fi

		qemu-system-x86_64 -m 4G -smp 4 -cpu host -serial stdio -enable-kvm -rtc base=localtime -display sdl -net nic,model=e1000 -hda ./cpcdos.qcow2 || command_not_found qemu
	;;

	*)
		usage
		exit 1
	;;
esac

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