NAME

       kernel-command-line - Kernel command line parameters

SYNOPSIS

       /proc/cmdline

DESCRIPTION

       The kernel, the initial RAM disk (initrd) and basic userspace functionality may be
       configured at boot via kernel command line arguments.

       For command line parameters understood by the kernel, please see kernel-parameters.txt[1]
       and bootparam(7).

       For command line parameters understood by the initial RAM disk, please see
       dracut.cmdline(7), or the documentation of the specific initrd implementation of your
       installation.

CORE OS COMMAND LINE ARGUMENTS

       systemd.unit=, rd.systemd.unit=, systemd.dump_core=, systemd.crash_chvt=,
       systemd.crash_shell=, systemd.crash_reboot=, systemd.confirm_spawn=, systemd.show_status=,
       systemd.log_target=, systemd.log_level=, systemd.log_color=, systemd.log_location=,
       systemd.default_standard_output=, systemd.default_standard_error=, systemd.setenv=,
       systemd.machine_id=
           Parameters understood by the system and service manager to control system behavior.
           For details, see systemd(1).

       systemd.mask=, systemd.wants=, systemd.debug-shell
           Additional parameters understood by systemd-debug-generator(8), to mask or start
           specific units at boot, or invoke a debug shell on tty9.

       systemd.restore_state=
           This parameter is understood by several system tools to control whether or not they
           should restore system state from the previous boot. For details, see systemd-
           backlight@.service(8) and systemd-rfkill.service(8).

       quiet
           Parameter understood by both the kernel and the system and service manager to control
           console log verbosity. For details, see systemd(1).

       debug
           Parameter understood by both the kernel and the system and service manager to control
           console log verbosity. For details, see systemd(1).

       -b, emergency, rescue, single, s, S, 1, 2, 3, 4, 5
           Parameters understood by the system and service manager, as compatibility options. For
           details, see systemd(1).

       locale.LANG=, locale.LANGUAGE=, locale.LC_CTYPE=, locale.LC_NUMERIC=, locale.LC_TIME=,
       locale.LC_COLLATE=, locale.LC_MONETARY=, locale.LC_MESSAGES=, locale.LC_PAPER=,
       locale.LC_NAME=, locale.LC_ADDRESS=, locale.LC_TELEPHONE=, locale.LC_MEASUREMENT=,
       locale.LC_IDENTIFICATION=
           Parameters understood by the system and service manager to control locale and language
           settings. For details, see systemd(1).

       fsck.mode=, fsck.repair=
           Parameters understood by the file system checker services. For details, see systemd-
           fsck@.service(8).

       quotacheck.mode=
           Parameter understood by the file quota checker service. For details, see systemd-
           quotacheck.service(8).

       systemd.journald.forward_to_syslog=, systemd.journald.forward_to_kmsg=,
       systemd.journald.forward_to_console=, systemd.journald.forward_to_wall=
           Parameters understood by the journal service. For details, see systemd-
           journald.service(8).

       vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=, vconsole.font.map=,
       vconsole.font.unimap=
           Parameters understood by the virtual console setup logic. For details, see systemd-
           vconsole-setup.service(8).

       udev.log-priority=, rd.udev.log-priority=, udev.children-max=, rd.udev.children-max=,
       udev.exec-delay=, rd.udev.exec-delay=, udev.event-timeout=, rd.udev.event-timeout=,
       net.ifnames=
           Parameters understood by the device event managing daemon. For details, see systemd-
           udevd.service(8).

       plymouth.enable=
           May be used to disable the Plymouth boot splash. For details, see plymouth(8).

       luks=, rd.luks=, luks.crypttab=, rd.luks.crypttab=, luks.name=, rd.luks.name=, luks.uuid=,
       rd.luks.uuid=, luks.options=, rd.luks.options=, luks.key=, rd.luks.key=
           Configures the LUKS full-disk encryption logic at boot. For details, see systemd-
           cryptsetup-generator(8).

       fstab=, rd.fstab=
           Configures the /etc/fstab logic at boot. For details, see systemd-fstab-generator(8).

       root=, rootfstype=, rootflags=, ro, rw
           Configures the root file system and its file system type and mount options, as well as
           whether it shall be mounted read-only or read-writable initially. For details, see
           systemd-fstab-generator(8).

       systemd.gpt_auto=, rd.systemd.gpt_auto=
           Configures whether GPT based partition auto-discovery shall be attempted. For details,
           see systemd-gpt-auto-generator(8).

       modules-load=, rd.modules-load=
           Load a specific kernel module early at boot. For details, see systemd-modules-
           load.service(8).

       resume=
           Enables resume from hibernation using the specified device. All fstab(5)-like paths
           are supported. For details, see systemd-hibernate-resume-generator(8).

SEE ALSO

       systemd(1), bootparam(7), dracut.cmdline(7), systemd-debug-generator(8), systemd-
       fsck@.service(8), systemd-quotacheck.service(8), systemd-journald.service(8), systemd-
       vconsole-setup.service(8), systemd-udevd.service(8), plymouth(8), systemd-cryptsetup-
       generator(8), systemd-fstab-generator(8), systemd-gpt-auto-generator(8), systemd-modules-
       load.service(8), systemd-backlight@.service(8), systemd-rfkill.service(8), systemd-
       hibernate-resume-generator(8)

NOTES

        1. kernel-parameters.txt
           https://www.kernel.org/doc/Documentation/kernel-parameters.txt