Update Fedora bootctl code, for (U)EFI booting

bootctl-postinst.sh

#!/bin/bash
# Version 0.2 by Sebastiaan Franken 
# This is meant and tested on Fedora and Fedora only, with systemd-boot (bootctl)
# Place this file in /etc/kernel/postinst.d/ and don't forget to make it executable
# with chmod +x /etc/kernel/postinst.d/bootctl-postinst.sh
#
# Also, don't forget to modify the rootpath variable to reflect your situation

[ -f /etc/sysconfig/kernel ] && . /etc/sysconfig/kernel

rootpath="/dev/mapper/fedora_sebastiaan--zenbook-root"
version="$1"
configfile="/boot/efi/loader/entries/fedora.conf"
cat << EOF > ${configfile}
title		Fedora ${version}
linux		/vmlinuz
initrd		/initramfs.img
options		root=${rootpath} rhgb quiet LANG=nl_NL.UTF-8
EOF

cp /boot/vmlinuz-${version} /boot/efi/vmlinuz
cp /boot/initramfs-${version}.img /boot/efi/initramfs.img

bootctl --path=/boot/efi update >/dev/null