KERNEL-COMMAND-LINE(7) kernel-command-line KERNEL-COMMAND-LINE(7)

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.dumpcore=,
       systemd.crashshell=, systemd.crashchvt=, systemd.confirmspawn=,
       systemd.showstatus=, systemd.logtarget=, systemd.loglevel=,
       systemd.logcolor=, systemd.loglocation=,
       systemd.defaultstandardoutput=, systemd.defaultstandarderror=,
       systemd.setenv=
           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.restorestate=
           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.LCCTYPE=, locale.LCNUMERIC=,
       locale.LCTIME=, locale.LCCOLLATE=, locale.LCMONETARY=,
       locale.LCMESSAGES=, locale.LCPAPER=, locale.LCNAME=,
       locale.LCADDRESS=, locale.LCTELEPHONE=, locale.LCMEASUREMENT=,
       locale.LCIDENTIFICATION=
           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.forwardtosyslog=, systemd.journald.forwardtokmsg=,
       systemd.journald.forwardtoconsole=, systemd.journald.forwardtowall=
           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.gptauto=, rd.systemd.gptauto=
           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



systemd 219                                             KERNEL-COMMAND-LINE(7)