{
    "mode": "info",
    "parameter": "SYSTEMD-FSCKD.SERVICE",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/info/SYSTEMD-FSCKD.SERVICE/json",
    "generated": "2026-07-05T11:51:50Z",
    "synopsis": "systemd-fsckd.service\nsystemd-fsckd.socket\n/lib/systemd/systemd-fsckd",
    "sections": {
        "NAME": {
            "content": "systemd-fsckd.service, systemd-fsckd.socket, systemd-fsckd - File\nsystem check progress reporting\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "systemd-fsckd.service\n\nsystemd-fsckd.socket\n\n/lib/systemd/systemd-fsckd\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "systemd-fsckd.service is a service responsible for receiving file\nsystem check progress, and communicating some consolidated data to\nconsole and plymouth (if running). It also handles possible check\ncancellations.\n\nsystemd-fsckd receives messages about file system check progress from\nfsck through an UNIX domain socket. It can display the progress of the\nleast advanced fsck as well as the total number of devices being\nchecked in parallel to the console. It will also send progress messages\nto plymouth. Both the raw data and translated messages are sent, so\ncompiled plymouth themes can use the raw data to display custom\nmessages, and scripted themes, not supporting i18n, can display the\ntranslated versions.\n\nsystemd-fsckd will instruct plymouth to grab Control+C keypresses. When\nthe key is pressed, running checks will be terminated. It will also\ncancel any newly connected fsck instances for the lifetime of\nsystemd-fsckd.\n",
            "subsections": []
        },
        "PROTOCOL FOR COMMUNICATION WITH PLYMOUTH": {
            "content": "systemd-fsckd passes the following messages to the theme:\n\nProgress update, sent as a plymouth update message:\n\"fsckd:<numdevices>:<progress>:<string>\"\n\n\"<numdevices>\"\nthe current number of devices being checked (int)\n\n\"<progress>\"\nthe current minimum percentage of all devices being checking\n(float, from 0 to 100)\n\n\"<string>\"\na translated message ready to be displayed by the plymouth theme\ndisplaying the data above. It can be overridden by themes\nsupporting i18n.\n\nCancel message, sent as a traditional plymouth message:\n\"fsckd-cancel-msg:<string>\"\n\n\"<strings>\"\na translated string ready to be displayed by the plymouth theme\nindicating that Control+C can be used to cancel current checks. It\ncan be overridden (matching only \"fsckd-cancel-msg\" prefix) by\nthemes supporting i18n.\n",
            "subsections": []
        },
        "OPTIONS": {
            "content": "The following options are understood:\n",
            "subsections": [
                {
                    "name": "-h, --help",
                    "content": "Print a short help text and exit.\n",
                    "flag": "-h",
                    "long": "--help"
                },
                {
                    "name": "--version",
                    "content": "Print a short version string and exit.\n",
                    "long": "--version"
                }
            ]
        },
        "EXIT STATUS": {
            "content": "On success, 0 is returned, a non-zero failure code otherwise. Note that\nthe daemon stays idle for a while to accept new fsck connections before\nexiting.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "systemd(1), systemd-fsck(8), fsck(8), systemd-quotacheck.service(8),\nfsck.btrfs(8), fsck.cramfs(8), fsck.ext4(8), fsck.fat(8),\nfsck.hfsplus(8), fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)\n\nsystemd 249                                           SYSTEMD-FSCKD.SERVICE(8)",
            "subsections": []
        }
    },
    "summary": "systemd-fsckd.service, systemd-fsckd.socket, systemd-fsckd - File system check progress reporting",
    "flags": [
        {
            "flag": "-h",
            "long": "--help",
            "arg": null,
            "description": "Print a short help text and exit."
        },
        {
            "flag": "",
            "long": "--version",
            "arg": null,
            "description": "Print a short version string and exit."
        }
    ],
    "examples": [],
    "see_also": [
        {
            "name": "systemd",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/systemd/1/json"
        },
        {
            "name": "systemd-fsck",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/systemd-fsck/8/json"
        },
        {
            "name": "fsck",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck/8/json"
        },
        {
            "name": "systemd-quotacheck.service",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/systemd-quotacheck.service/8/json"
        },
        {
            "name": "fsck.btrfs",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.btrfs/8/json"
        },
        {
            "name": "fsck.cramfs",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.cramfs/8/json"
        },
        {
            "name": "fsck.ext4",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.ext4/8/json"
        },
        {
            "name": "fsck.fat",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.fat/8/json"
        },
        {
            "name": "fsck.hfsplus",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.hfsplus/8/json"
        },
        {
            "name": "fsck.minix",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.minix/8/json"
        },
        {
            "name": "fsck.ntfs",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.ntfs/8/json"
        },
        {
            "name": "fsck.xfs",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/fsck.xfs/8/json"
        }
    ]
}