archlinux's modules detection through sysfs

auto_modules.sh

auto_modules() {
    # Perform auto detection of modules via sysfs.

    local mods=

    IFS=$'\n' read -rd '' -a mods < \
        <(find /sys/devices -name modalias -exec sort -u {} + |
        # delimit each input by a newline, expanded in place
        xargs -d $'\n' modprobe -d "$BASEDIR" -aRS "$KERNELVERSION" |
        sort -u)

    printf "%s\n" "${mods[@]//-/_}"
    (( ${#mods[*]} ))
}