{
    "mode": "man",
    "parameter": "atd",
    "section": "8",
    "url": "https://www.chedong.com/phpMan.php/man/atd/8/json",
    "generated": "2026-06-05T20:39:10Z",
    "synopsis": "atd [-l loadavg] [-b batchinterval] [-d] [-f] [-s]",
    "sections": {
        "NAME": {
            "content": "atd - run jobs queued for later execution\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "atd [-l loadavg] [-b batchinterval] [-d] [-f] [-s]\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "atd runs jobs queued by at(1).\n",
            "subsections": []
        },
        "OPTIONS": {
            "content": "",
            "subsections": [
                {
                    "name": "-l",
                    "content": "the compile-time choice of 1.5.  For an SMP system with n  CPUs,  you  will  probably\nwant to set this higher than n-1.\n",
                    "flag": "-l"
                },
                {
                    "name": "-b",
                    "content": "fault).\n",
                    "flag": "-b"
                },
                {
                    "name": "-d",
                    "content": "tion also implies -f.\n",
                    "flag": "-d"
                },
                {
                    "name": "-f",
                    "content": "",
                    "flag": "-f"
                },
                {
                    "name": "-s",
                    "content": "with old versions of at; atd -s is equivalent to the old atrun command.\n",
                    "flag": "-s"
                }
            ]
        },
        "WARNING": {
            "content": "atd won't work if its spool directory is mounted via NFS even if norootsquash is set.\n",
            "subsections": []
        },
        "FILES": {
            "content": "/var/spool/cron/atjobs The directory for storing jobs; this should be mode 700, owner daemon.\n\n/var/spool/cron/atspool The directory for storing output; this should be mode 700, owner dae‐\nmon.\n\n/etc/at.allow, /etc/at.deny determine who can use the at system.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "at(1), at.deny(5), at.allow(5), cron(8), crontab(1), syslog(3).\n",
            "subsections": []
        },
        "BUGS": {
            "content": "The functionality of atd should be merged into cron(8).\n\n\n\n2009-11-14                                       ATD(8)",
            "subsections": []
        }
    },
    "summary": "atd - run jobs queued for later execution",
    "flags": [
        {
            "flag": "-l",
            "long": null,
            "arg": null,
            "description": "the compile-time choice of 1.5. For an SMP system with n CPUs, you will probably want to set this higher than n-1."
        },
        {
            "flag": "-b",
            "long": null,
            "arg": null,
            "description": "fault)."
        },
        {
            "flag": "-d",
            "long": null,
            "arg": null,
            "description": "tion also implies -f."
        },
        {
            "flag": "-f",
            "long": null,
            "arg": null,
            "description": ""
        },
        {
            "flag": "-s",
            "long": null,
            "arg": null,
            "description": "with old versions of at; atd -s is equivalent to the old atrun command."
        }
    ],
    "examples": [],
    "see_also": [
        {
            "name": "at",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/at/1/json"
        },
        {
            "name": "at.deny",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/at.deny/5/json"
        },
        {
            "name": "at.allow",
            "section": "5",
            "url": "https://www.chedong.com/phpMan.php/man/at.allow/5/json"
        },
        {
            "name": "cron",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/cron/8/json"
        },
        {
            "name": "crontab",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/crontab/1/json"
        },
        {
            "name": "syslog",
            "section": "3",
            "url": "https://www.chedong.com/phpMan.php/man/syslog/3/json"
        }
    ]
}