Downloads the selected kernel from the ubuntu ppa

download_upstream_kernel

#!/usr/bin/env bash
set euo pipefail
base_version=5.10.4
version=${base_version}-051004
# (generic|lowlatency)
variant=generic
arch=amd64
timestamp=202012301142

function download() {
	wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v${base_version}/${arch}/linux-headers-${version}-${variant}_${version}.${timestamp}_${arch}.deb
	wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v${base_version}/${arch}/linux-headers-${version}_${version}.${timestamp}_all.deb
	wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v${base_version}/${arch}/linux-image-unsigned-${version}-${variant}_${version}.${timestamp}_${arch}.deb
	wget -c https://kernel.ubuntu.com/~kernel-ppa/mainline/v${base_version}/${arch}/linux-modules-${version}-${variant}_${version}.${timestamp}_${arch}.deb
}

function main() {
	if [ -d "${base_version}" ]; then
		echo "Folder ${base_version} already exists, please remove it first"
	else
		mkdir -p "${base_version}" && \
			pushd ${base_version} && \
			download && \
			popd
	fi
}

main "$@"