kernel-command-line(7)

1KERNEL-COMMAND-LINE(7)        kernel-command-line       KERNEL-COMMAND-LINE(7)
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NAME

6       kernel-command-line - Kernel command line parameters
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SYNOPSIS

9       /proc/cmdline
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DESCRIPTION

12       The kernel, the initial RAM disk (initrd) and basic userspace
13       functionality may be configured at boot via kernel command line
14       arguments.
15
16       For command line parameters understood by the kernel, please see
17       kernel-parameters.txt[1] and bootparam(7).
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19       For command line parameters understood by the initial RAM disk, please
20       see dracut.cmdline(7), or the documentation of the specific initrd
21       implementation of your installation.
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CORE OS COMMAND LINE ARGUMENTS

24       systemd.unit=, rd.systemd.unit=, systemd.dump_core=,
25       systemd.crash_shell=, systemd.crash_chvt=, systemd.confirm_spawn=,
26       systemd.show_status=, systemd.log_target=, systemd.log_level=,
27       systemd.log_color=, systemd.log_location=,
28       systemd.default_standard_output=, systemd.default_standard_error=,
29       systemd.setenv=
30           Parameters understood by the system and service manager to control
31           system behavior. For details, see systemd(1).
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33       systemd.mask=, systemd.wants=, systemd.debug-shell
34           Additional parameters understood by systemd-debug-generator(8), to
35           mask or start specific units at boot, or invoke a debug shell on
36           tty9.
37
38       systemd.restore_state=
39           This parameter is understood by several system tools to control
40           whether or not they should restore system state from the previous
41           boot. For details, see systemd-backlight@.service(8) and systemd-
42           rfkill@.service(8).
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44       quiet
45           Parameter understood by both the kernel and the system and service
46           manager to control console log verbosity. For details, see
47           systemd(1).
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49       debug
50           Parameter understood by both the kernel and the system and service
51           manager to control console log verbosity. For details, see
52           systemd(1).
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54       -b, emergency, rescue, single, s, S, 1, 2, 3, 4, 5
55           Parameters understood by the system and service manager, as
56           compatibility options. For details, see systemd(1).
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58       locale.LANG=, locale.LANGUAGE=, locale.LC_CTYPE=, locale.LC_NUMERIC=,
59       locale.LC_TIME=, locale.LC_COLLATE=, locale.LC_MONETARY=,
60       locale.LC_MESSAGES=, locale.LC_PAPER=, locale.LC_NAME=,
61       locale.LC_ADDRESS=, locale.LC_TELEPHONE=, locale.LC_MEASUREMENT=,
62       locale.LC_IDENTIFICATION=
63           Parameters understood by the system and service manager to control
64           locale and language settings. For details, see systemd(1).
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66       fsck.mode=, fsck.repair=
67           Parameters understood by the file system checker services. For
68           details, see systemd-fsck@.service(8).
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70       quotacheck.mode=
71           Parameter understood by the file quota checker service. For
72           details, see systemd-quotacheck.service(8).
73
74       systemd.journald.forward_to_syslog=, systemd.journald.forward_to_kmsg=,
75       systemd.journald.forward_to_console=, systemd.journald.forward_to_wall=
76           Parameters understood by the journal service. For details, see
77           systemd-journald.service(8).
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79       vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=,
80       vconsole.font.map=, vconsole.font.unimap=
81           Parameters understood by the virtual console setup logic. For
82           details, see systemd-vconsole-setup.service(8).
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84       udev.log-priority=, rd.udev.log-priority=, udev.children-max=,
85       rd.udev.children-max=, udev.exec-delay=, rd.udev.exec-delay=,
86       udev.event-timeout=, rd.udev.event-timeout=, net.ifnames=
87           Parameters understood by the device event managing daemon. For
88           details, see systemd-udevd.service(8).
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90       plymouth.enable=
91           May be used to disable the Plymouth boot splash. For details, see
92           plymouth(8).
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94       luks=, rd.luks=, luks.crypttab=, rd.luks.crypttab=, luks.name=,
95       rd.luks.name=, luks.uuid=, rd.luks.uuid=, luks.options=,
96       rd.luks.options=, luks.key=, rd.luks.key=
97           Configures the LUKS full-disk encryption logic at boot. For
98           details, see systemd-cryptsetup-generator(8).
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100       fstab=, rd.fstab=
101           Configures the /etc/fstab logic at boot. For details, see systemd-
102           fstab-generator(8).
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104       root=, rootfstype=, rootflags=, ro, rw
105           Configures the root file system and its file system type and mount
106           options, as well as whether it shall be mounted read-only or
107           read-writable initially. For details, see systemd-fstab-
108           generator(8).
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110       systemd.gpt_auto=, rd.systemd.gpt_auto=
111           Configures whether GPT based partition auto-discovery shall be
112           attempted. For details, see systemd-gpt-auto-generator(8).
113
114       modules-load=, rd.modules-load=
115           Load a specific kernel module early at boot. For details, see
116           systemd-modules-load.service(8).
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118       resume=
119           Enables resume from hibernation using the specified device. All
120           fstab(5)-like paths are supported. For details, see systemd-
121           hibernate-resume-generator(8).
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NOTES

133        1. kernel-parameters.txt
134           https://www.kernel.org/doc/Documentation/kernel-parameters.txt
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138systemd 219                                             KERNEL-COMMAND-LINE(7)

NAME

SYNOPSIS

DESCRIPTION

CORE OS COMMAND LINE ARGUMENTS

SEE ALSO

NOTES