rexberg

Start a temporary Linux system.

Create a temporary directory.

$ tempdir="/tmp/archlinux_$(date +%Y-%m-%d_%H-%M)"
$ mkdir $tempdir

Download, unpack the latest archlinux-bootstrap archive to the temporary directory, stripping the top level directory, packs it to a new ~/root.tar.gz archive and removes the temporary directory.

$ curl https://mirrors.edge.kernel.org/archlinux/iso/latest/archlinux-bootstrap-x86_64.tar.gz | sudo tar -xvz --strip-components=1 -C $tempdir && sudo tar -cvf - -C $tempdir . --remove-files > ~/root.tar.gz