dracut-rebuild

#!/usr/bin/env bash
#
# Rebuild all the initrds using dracut

# This finds the best token for systemd-boot
find_token() {
    if [[ -s /etc/kernel/entry-token ]] ; then
        cat /etc/kernel/entry-token
    elif [[ -s /etc/machine-id ]] ; then
        cat /etc/machine-id
    elif [[ $(grep "^IMAGE_ID=" /etc/os-release) ]] ; then
        grep "^IMAGE_ID=" /etc/os-release | awk -F"=" '{print $2}'
    elif [[ $(grep "^ID=" /etc/os-release) ]] ; then
        grep "^ID=" /etc/os-release | awk -F"=" '{print $2}'
    fi
}

[[ -f /etc/kernel-install-for-dracut.conf ]] && source /etc/kernel-install-for-dracut.conf
ESP=$(bootctl --print-esp-path)
TOKEN=$(find_token)
while read -r pkgbase; do
    kernelversion=$(basename "${pkgbase%/pkgbase}")
    kernelname=$(cat "${pkgbase}")
    INITRD_PATH="${ESP}/${TOKEN}/${kernelversion}"
    if [[ ! -d "$INITRD_PATH" ]] ; then
        echo 'Failed to build initrds, use "sudo reinstall-kernels" instead' 1>&2
        exit 1
    fi
    echo "Running dracut for ${kernelname}-${kernelversion}"
    [[ ${DRACUT_QUIET} == "true" ]] && DRACUT_EXTRA_PARAMS=" --quiet"
    dracut --force --hostonly --no-hostonly-cmdline${DRACUT_EXTRA_PARAMS} "${INITRD_PATH}/initrd" "${kernelversion}"
    [[ ${NO_DRACUT_FALLBACK} != "true" ]] && dracut --force --no-hostonly${DRACUT_EXTRA_PARAMS} "${INITRD_PATH}/initrd-fallback" "${kernelversion}"
done < <(find /usr/lib/modules -maxdepth 2 -type f -name pkgbase)