{
    "mode": "man",
    "parameter": "sysctl.conf",
    "section": "5",
    "url": "https://www.chedong.com/phpMan.php/man/sysctl.conf/5/json",
    "generated": "2026-07-05T02:10:01Z",
    "sections": {
        "NAME": {
            "content": "sysctl.conf - sysctl preload/configuration file\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "sysctl.conf  is  a simple file containing sysctl values to be read in and set by sysctl.  The\nsyntax is simply as follows:\n\n# comment\n; comment\n\ntoken = value\n\nNote that blank lines are ignored, and whitespace before and after a token or  value  is  ig‐\nnored,  although  a value can contain whitespace within.  Lines which begin with a # or ; are\nconsidered comments and ignored.\n\nIf a line begins with a single -, any attempts to set the value that fail will be ignored.\n\n",
            "subsections": []
        },
        "NOTES": {
            "content": "As the /etc/sysctl.conf file is used to override default  kernel  parameter  values,  only  a\nsmall  number  of  parameters  is  predefined  in  the  file.   Use /sbin/sysctl -a or follow\nsysctl(8) to list all possible parameters. The description of individual  parameters  can  be\nfound in the kernel documentation.\n",
            "subsections": []
        },
        "EXAMPLE": {
            "content": "# sysctl.conf sample\n#\nkernel.domainname = example.com\n; this one has a space which will be written to the sysctl!\nkernel.modprobe = /sbin/mod probe\n",
            "subsections": []
        },
        "FILES": {
            "content": "/etc/sysctl.d/*.conf\n/run/sysctl.d/*.conf\n/usr/local/lib/sysctl.d/*.conf\n/usr/lib/sysctl.d/*.conf\n/lib/sysctl.d/*.conf\n/etc/sysctl.conf\n\nThe paths where sysctl preload files usually exist.  See also sysctl option --system.\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "sysctl(8)\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "George Staikos ⟨staikos@0wned.org⟩\n",
            "subsections": []
        },
        "REPORTING BUGS": {
            "content": "Please send bug reports to ⟨procps@freelists.org⟩\n\n\n\nprocps-ng                                    2020-06-04                               SYSCTL.CONF(5)",
            "subsections": []
        }
    },
    "summary": "sysctl.conf - sysctl preload/configuration file",
    "flags": [],
    "examples": [
        "# sysctl.conf sample",
        "kernel.domainname = example.com",
        "; this one has a space which will be written to the sysctl!",
        "kernel.modprobe = /sbin/mod probe"
    ],
    "see_also": [
        {
            "name": "sysctl",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/sysctl/8/json"
        }
    ]
}