晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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sh-3ll 1.0
DIR:/lib/dracut/modules.d/50drm/
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Current File : //lib/dracut/modules.d/50drm/module-setup.sh
#!/usr/bin/bash

# called by dracut
check() {
    return 255
}

# called by dracut
depends() {
    return 0
}

# called by dracut
installkernel() {
    # Include KMS capable drm drivers

    if [[ ${DRACUT_ARCH:-$(uname -m)} == arm* || ${DRACUT_ARCH:-$(uname -m)} == aarch64 ]]; then
        # arm/aarch64 specific modules needed by drm
        instmods \
            "=drivers/gpu/drm/i2c" \
            "=drivers/gpu/drm/panel" \
            "=drivers/gpu/drm/bridge" \
            "=drivers/video/backlight"
    fi

    instmods amdkfd hyperv_fb "=drivers/pwm"

    # if the hardware is present, include module even if it is not currently loaded,
    # as we could e.g. be in the installer; nokmsboot boot parameter will disable
    # loading of the driver if needed
    if [[ $hostonly ]]; then
        local i modlink modname

        for i in /sys/bus/{pci/devices,platform/devices,virtio/devices,soc/devices/soc?,vmbus/devices}/*/modalias; do
            [[ -e $i ]] || continue
            [[ -n $(< "$i") ]] || continue
            # shellcheck disable=SC2046
            if hostonly="" dracut_instmods --silent -s "drm_crtc_init|drm_dev_register|drm_encoder_init" -S "iw_handler_get_spy" $(< "$i"); then
                if strstr "$(modinfo -F filename $(< "$i") 2> /dev/null)" radeon.ko; then
                    hostonly='' instmods amdkfd
                fi
            fi
        done
        # if there is a privacy screen then its driver must be loaded before the
        # kms driver will bind, otherwise its probe() will return -EPROBE_DEFER
        # note privacy screens always register, even with e.g. nokmsboot
        for i in /sys/class/drm/privacy_screen-*/device/driver/module; do
            [[ -L $i ]] || continue
            modlink=$(readlink "$i")
            modname=$(basename "$modlink")
            instmods "$modname"
        done
    else
        dracut_instmods -o -s "drm_crtc_init|drm_dev_register|drm_encoder_init" "=drivers/gpu/drm" "=drivers/staging"
        # also include privacy screen providers (see above comment)
        # atm all providers live under drivers/platform/x86
        dracut_instmods -o -s "drm_privacy_screen_register" "=drivers/platform/x86"
    fi
}