minilie

set -e -x

if test -f "linux.tar.gz"; then
    echo "linux.tar.gz already exits"
else
    echo "download and create linux.tar.gz"
    curl -o- https://cdn.kernel.org/pub/linux/kernel/v6.x/linux-6.12.4.tar.xz | xz -d | tee linux.tar.ref | gzip > linux.tar.gz

fi