KERNEL-COMMAND-LINE(7)kernel-command-lineKERNEL-COMMAND-LINE(7)NAMEkernel-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_shell=, systemd.crash_chvt=, 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=
Parameters understood by the system and service manager to control
system behavior. For details, see systemd(1).
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, 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=
Parameter 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=,
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.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).
modules-load=, rd.modules-load=
Load a specific kernel module early at boot. For details, see
systemd-modules-load.service(8).
SEE ALSOsystemd(1), bootparam(7), dracut.cmdline(7), 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-
modules-load.service(8)systemd-backlight@.service(8)systemd-
rfkill@.service(8)NOTES
1. kernel-parameters.txt
https://www.kernel.org/doc/Documentation/kernel-parameters.txt
systemd 212KERNEL-COMMAND-LINE(7)
