NAME¶

systemd.directives - Index of configuration directives

UNIT DIRECTIVES¶

Directives for configuring units, used in unit files.

Accept=

AccuracySec=

After=

Alias=

AllowIsolate=

AllowedCPUs=

AllowedMemoryNodes=

Also=

AmbientCapabilities=

AssertACPower=

AssertArchitecture=

AssertCapability=

AssertControlGroupController=

AssertDirectoryNotEmpty=

AssertFileIsExecutable=

AssertFileNotEmpty=

AssertFirstBoot=

AssertGroup=

AssertHost=

AssertKernelCommandLine=

AssertKernelVersion=

AssertNeedsUpdate=

AssertPathExists=

AssertPathExistsGlob=

AssertPathIsDirectory=

AssertPathIsMountPoint=

AssertPathIsReadWrite=

AssertPathIsSymbolicLink=

AssertSecurity=

AssertUser=

AssertVirtualization=

Backlog=

Before=

BindIPv6Only=

BindPaths=

BindReadOnlyPaths=

BindToDevice=

BindsTo=

BlockIOAccounting=

BlockIODeviceWeight=

BlockIOReadBandwidth=

BlockIOWeight=

BlockIOWriteBandwidth=

Broadcast=

BusName=

CPUAccounting=

CPUQuota=

CPUQuotaPeriodSec=

CPUShares=

CPUWeight=

CapabilityBoundingSet=

CollectMode=

ConditionACPower=

ConditionArchitecture=

ConditionCapability=

ConditionControlGroupController=

ConditionDirectoryNotEmpty=

ConditionFileIsExecutable=

ConditionFileNotEmpty=

ConditionFirstBoot=

ConditionGroup=

ConditionHost=

ConditionKernelCommandLine=

ConditionKernelVersion=

ConditionNeedsUpdate=

ConditionPathExists=

ConditionPathExistsGlob=

ConditionPathIsDirectory=

ConditionPathIsMountPoint=

ConditionPathIsReadWrite=

ConditionPathIsSymbolicLink=

ConditionSecurity=

ConditionUser=

ConditionVirtualization=

Conflicts=

DefaultDependencies=

DefaultInstance=

DeferAcceptSec=

Delegate=

Description=

DeviceAllow=

DevicePolicy=

DirectoryMode=

DirectoryNotEmpty=

Documentation=

DynamicUser=

ExecCondition=

ExecReload=

ExecStart=

ExecStartPost=

ExecStartPre=

ExecStop=

ExecStopPost=

ExecStopPre=

FailureAction=

FileDescriptorName=

FileDescriptorStoreMax=

FlushPending=

ForceUnmount=

FreeBind=

Group=

GuessMainPID=

IOAccounting=

IODeviceLatencyTargetSec=

IODeviceWeight=

IOReadBandwidthMax=

IOReadIOPSMax=

IOWeight=

IOWriteBandwidthMax=

IOWriteIOPSMax=

IPAccounting=

IPAddressAllow=

IPAddressDeny=

IPTOS=

IPTTL=

IgnoreOnIsolate=

JobRunningTimeoutSec=

JobTimeoutAction=

JobTimeoutRebootArgument=

JobTimeoutSec=

JoinsNamespaceOf=

KeepAlive=

KeepAliveIntervalSec=

KeepAliveProbes=

KeepAliveTimeSec=

KillMode=

KillSignal=

LazyUnmount=

ListenDatagram=

ListenFIFO=

ListenMessageQueue=

ListenNetlink=

ListenSequentialPacket=

ListenSpecial=

ListenStream=

ListenUSBFunction=

MakeDirectory=

Mark=

MaxConnections=

MaxConnectionsPerSource=

MemoryAccounting=

MemoryHigh=

MemoryLimit=

MemoryLow=

MemoryMax=

MemoryMin=

MemorySwapMax=

MessageQueueMaxMessages=

MessageQueueMessageSize=

MountAPIVFS=

NoDelay=

NoNewPrivileges=

NonBlocking=

NotifyAccess=

OnActiveSec=

OnBootSec=

OnCalendar=

OnFailure=

OnFailureJobMode=

OnStartupSec=

OnUnitActiveSec=

OnUnitInactiveSec=

Options=

PAMName=

PIDFile=

PartOf=

PassCredentials=

PassPacketInfo=

PassSecurity=

PathChanged=

PathExists=

PathExistsGlob=

PathModified=

PermissionsStartOnly=

Persistent=

PipeSize=

Priority=

PropagatesReloadTo=

RandomizedDelaySec=

RebootArgument=

ReceiveBuffer=

RefuseManualStart=

RefuseManualStop=

ReloadPropagatedFrom=

RemainAfterElapse=

RemainAfterExit=

RemoveOnStop=

RequiredBy=

Requires=

RequiresMountsFor=

Requisite=

Restart=

RestartForceExitStatus=

RestartPreventExitStatus=

RestartSec=

ReusePort=

RootDirectory=

RootDirectoryStartOnly=

RootImage=

RuntimeMaxSec=

SELinuxContextFromNet=

SecureBits=

SendBuffer=

SendSIGHUP=

SendSIGKILL=

Service=

Slice=

SloppyOptions=

SmackLabel=

SmackLabelIPIn=

SmackLabelIPOut=

SocketGroup=

SocketMode=

SocketProtocol=

SocketUser=

Sockets=

SourcePath=

StartLimitAction=

StartLimitBurst=

StartLimitIntervalSec=

StartupBlockIOWeight=

StartupCPUShares=

StartupCPUWeight=

StartupIOWeight=

StopWhenUnneeded=

SuccessAction=

SuccessExitStatus=

SupplementaryGroups=

Symlinks=

TCPCongestion=

TasksAccounting=

TasksMax=

TimeoutIdleSec=

TimeoutSec=

TimeoutStartSec=

TimeoutStopSec=

Transparent=

TriggerLimitBurst=

TriggerLimitIntervalSec=

Type=

USBFunctionDescriptors=

USBFunctionStrings=

Unit=

User=

WakeSystem=

WantedBy=

Wants=

WatchdogSec=

What=

Where=

WorkingDirectory=

Writable=

OPTIONS ON THE KERNEL COMMAND LINE¶

Kernel boot options for configuring the behaviour of the systemd process.

-b

1

2

3

4

5

S

debug

emergency

fsck.mode=

fsck.repair=

fstab=

locale.LANG=

locale.LANGUAGE=

locale.LC_ADDRESS=

locale.LC_COLLATE=

locale.LC_CTYPE=

locale.LC_IDENTIFICATION=

locale.LC_MEASUREMENT=

locale.LC_MESSAGES=

locale.LC_MONETARY=

locale.LC_NAME=

locale.LC_NUMERIC=

locale.LC_PAPER=

locale.LC_TELEPHONE=

locale.LC_TIME=

luks.crypttab=

luks.key=

luks.name=

luks.options=

luks.uuid=

luks=

modules_load=

mount.usr=

mount.usrflags=

mount.usrfstype=

net.ifnames=

net.naming-scheme=

plymouth.enable=

quiet

quotacheck.mode=

rd.emergency

rd.fstab=

rd.luks.crypttab=

rd.luks.key=

rd.luks.name=

rd.luks.options=

rd.luks.uuid=

rd.luks=

rd.modules_load=

rd.rescue

rd.systemd.gpt_auto=

rd.systemd.unit=

rd.systemd.verity=

rd.udev.children_max=

rd.udev.event_timeout=

rd.udev.exec_delay=

rd.udev.log_priority=

rescue

resume=

ro

root=

rootflags=

rootfstype=

roothash=

rw

s

single

systemd.confirm_spawn

systemd.cpu_affinity=

systemd.crash_chvt

systemd.crash_reboot

systemd.crash_shell

systemd.debug_shell

systemd.default_standard_error=

systemd.default_standard_output=

systemd.default_timeout_start_sec=

systemd.dump_core

systemd.firstboot=

systemd.gpt_auto=

systemd.journald.forward_to_console=

systemd.journald.forward_to_kmsg=

systemd.journald.forward_to_syslog=

systemd.journald.forward_to_wall=

systemd.legacy_systemd_cgroup_controller

systemd.log_color

systemd.log_level=

systemd.log_location=

systemd.log_target=

systemd.machine_id=

systemd.mask=

systemd.restore_state=

systemd.service_watchdogs

systemd.service_watchdogs=

systemd.setenv=

systemd.show_status

systemd.unified_cgroup_hierarchy

systemd.unit=

systemd.verity=

systemd.verity_root_data=

systemd.verity_root_hash=

systemd.volatile=

systemd.wants=

systemd.watchdog_device=

udev.children_max=

udev.event_timeout=

udev.exec_delay=

udev.log_priority=

vconsole.font=

vconsole.font_map=

vconsole.font_unimap=

vconsole.keymap=

vconsole.keymap_toggle=

ENVIRONMENT VARIABLES¶

Environment variables understood by the systemd manager and other programs.

$EXIT_CODE

$EXIT_STATUS

$HOME

$INVOCATION_ID

$JOURNAL_STREAM

$LANG

$LISTEN_FDNAMES

$LISTEN_FDS

$LISTEN_PID

$LOGNAME

$MAINPID

$MANAGERPID

$NOTIFY_SOCKET

$PATH

$PREVLEVEL

$RUNLEVEL

$SERVICE_RESULT

$SHELL

$SYSTEMD_COLORS

$SYSTEMD_DEBUGGER

$SYSTEMD_EDITOR

$SYSTEMD_LESS

$SYSTEMD_LESSCHARSET

$SYSTEMD_LOG_COLOR

$SYSTEMD_LOG_LEVEL

$SYSTEMD_LOG_LOCATION

$SYSTEMD_LOG_TARGET

$SYSTEMD_PAGER

$SYSTEMD_PAGERSECURE

$SYSTEMD_SYSVINIT_PATH

$SYSTEMD_SYSVRCND_PATH

$SYSTEMD_TIMEDATED_NTP_SERVICES

$SYSTEMD_UNIT_PATH

$SYSTEMD_URLIFY

$TERM

$USER

$WATCHDOG_PID

$WATCHDOG_USEC

$XDG_CONFIG_DIRS

$XDG_CONFIG_HOME

$XDG_DATA_DIRS

$XDG_DATA_HOME

$XDG_RUNTIME_DIR

$XDG_SEAT

$XDG_SESSION_CLASS

$XDG_SESSION_DESKTOP

$XDG_SESSION_ID

$XDG_SESSION_TYPE

$XDG_VTNR

UDEV DIRECTIVES¶

Directives for configuring systemd units through the udev database.

$$

$attr{file}

$devnode

$devpath

$driver

$env{key}

$id

$kernel

$links

$major

$minor

$name

$number

$parent

$result

$root

$sys

%%

%E{key}

%M

%N

%P

%S

%b

%c

%k

%m

%n

%p

%r

%s{file}

ACTION

ATTRS{filename}

ATTR{filename}

CONST{key}

DEVPATH

DRIVER

DRIVERS

ENV{key}

GOTO

GROUP

ID_MODEL=

ID_MODEL_FROM_DATABASE=

IMPORT{type}

KERNEL

KERNELS

LABEL

MODE

NAME

OPTIONS

OWNER

PROGRAM

RESULT

RUN{type}

SECLABEL{module}

SUBSYSTEM

SUBSYSTEMS

SYMLINK

SYSCTL{kernel parameter}

SYSTEMD_ALIAS=

SYSTEMD_MOUNT_OPTIONS=

SYSTEMD_MOUNT_WHERE=

SYSTEMD_READY=

SYSTEMD_USER_WANTS=

SYSTEMD_WANTS=

TAG

TAGS

TEST{octal mode mask}

WAIT_FOR

link_priority=

nowatch

static_node=

string_escape=

watch

NETWORK DIRECTIVES¶

Directives for configuring network links through the net-setup-link udev builtin and networks through systemd-networkd.

Alias=

AlternativeName=

AlternativeNamesPolicy=

Architecture=

AutoNegotiation=

BitsPerSecond=

Cache=

CombinedChannels=

DNS=

DNSOverTLS=

DNSSEC=

DNSStubListener=

Description=

Domains=

Driver=

Duplex=

FallbackDNS=

GenericReceiveOffload=

GenericSegmentationOffload=

Host=

KernelCommandLine=

KernelVersion=

LLMNR=

LargeReceiveOffload=

MACAddress=

MACAddressPolicy=

MTUBytes=

MulticastDNS=

Name=

NamePolicy=

OriginalName=

OtherChannels=

Path=

Port=

Priority=

RxChannels=

TCP6SegmentationOffload=

TCPSegmentationOffload=

TxChannels=

TxtData=

TxtText=

Type=

Virtualization=

WakeOnLan=

Weight=

JOURNAL FIELDS¶

Fields in the journal events with a well known meaning.

CODE_FILE=

CODE_FUNC=

CODE_LINE=

COREDUMP_UNIT=

COREDUMP_USER_UNIT=

ERRNO=

MESSAGE=

MESSAGE_ID=

OBJECT_AUDIT_LOGINUID=

OBJECT_AUDIT_SESSION=

OBJECT_CMDLINE=

OBJECT_COMM=

OBJECT_EXE=

OBJECT_GID=

OBJECT_PID=

OBJECT_SYSTEMD_CGROUP=

OBJECT_SYSTEMD_OWNER_UID=

OBJECT_SYSTEMD_SESSION=

OBJECT_SYSTEMD_UNIT=

OBJECT_SYSTEMD_USER_UNIT=

OBJECT_UID=

PRIORITY=

SYSLOG_FACILITY=

SYSLOG_IDENTIFIER=

SYSLOG_PID=

_AUDIT_LOGINUID=

_AUDIT_SESSION=

_BOOT_ID=

_CAP_EFFECTIVE=

_CMDLINE=

_COMM=

_EXE=

_GID=

_HOSTNAME=

_KERNEL_DEVICE=

_KERNEL_SUBSYSTEM=

_LINE_BREAK=

_MACHINE_ID=

_PID=

_SELINUX_CONTEXT=

_SOURCE_REALTIME_TIMESTAMP=

_STREAM_ID=

_SYSTEMD_CGROUP=

_SYSTEMD_INVOCATION_ID=

_SYSTEMD_OWNER_UID=

_SYSTEMD_SESSION=

_SYSTEMD_SLICE=

_SYSTEMD_UNIT=

_SYSTEMD_USER_UNIT=

_TRANSPORT=

_UDEV_DEVLINK=

_UDEV_DEVNODE=

_UDEV_SYSNAME=

_UID=

__CURSOR=

__MONOTONIC_TIMESTAMP=

__REALTIME_TIMESTAMP=

PAM CONFIGURATION DIRECTIVES¶

Directives for configuring PAM behaviour.

class=

debug

type=

/ETC/CRYPTTAB AND /ETC/FSTAB OPTIONS¶

Options which influence mounted filesystems and encrypted volumes.

_netdev

auto

cipher=

discard

hash=

header=

key-slot=

keyfile-offset=

keyfile-size=

keyfile-timeout=

luks

noauto

nofail

offset=

plain

read-only

readonly

sector-size=

size=

skip=

swap

tcrypt

tcrypt-hidden

tcrypt-keyfile=

tcrypt-system

tcrypt-veracrypt

timeout=

tmp

tries=

verify

x-initrd.mount

x-systemd.after=

x-systemd.automount

x-systemd.before=

x-systemd.device-bound

x-systemd.device-timeout=

x-systemd.growfs

x-systemd.idle-timeout=

x-systemd.makefs

x-systemd.mount-timeout=

x-systemd.requires-mounts-for=

x-systemd.requires=

SYSTEM MANAGER DIRECTIVES¶

Directives for configuring the behaviour of the systemd process.

CPUAffinity=

CapabilityBoundingSet=

CrashChangeVT=

CrashReboot=

CrashShell=

CtrlAltDelBurstAction=

DefaultBlockIOAccounting=

DefaultCPUAccounting=

DefaultDeviceTimeoutSec=

DefaultEnvironment=

DefaultIPAccounting=

DefaultLimitAS=

DefaultLimitCORE=

DefaultLimitCPU=

DefaultLimitDATA=

DefaultLimitFSIZE=

DefaultLimitLOCKS=

DefaultLimitMEMLOCK=

DefaultLimitMSGQUEUE=

DefaultLimitNICE=

DefaultLimitNOFILE=

DefaultLimitNPROC=

DefaultLimitRSS=

DefaultLimitRTPRIO=

DefaultLimitRTTIME=

DefaultLimitSIGPENDING=

DefaultLimitSTACK=

DefaultMemoryAccounting=

DefaultRestartSec=

DefaultStandardError=

DefaultStandardOutput=

DefaultStartLimitBurst=

DefaultStartLimitIntervalSec=

DefaultTasksAccounting=

DefaultTasksMax=

DefaultTimeoutStartSec=

DefaultTimeoutStopSec=

DefaultTimerAccuracySec=

DumpCore=

HibernateDelaySec=

HibernateMode=

HibernateState=

HybridSleepMode=

HybridSleepState=

JoinControllers=

LogColor=

LogLevel=

LogLocation=

LogTarget=

NUMAMask=

NUMAPolicy=

NoNewPrivileges=

RuntimeWatchdogSec=

ShowStatus=

ShutdownWatchdogSec=

SuspendMode=

SuspendState=

SystemCallArchitectures=

TimerSlackNSec=

WatchdogDevice=

COMMAND LINE OPTIONS¶

Command-line options accepted by programs in the systemd suite.

--accept

--accept-cached

--acquired

--action=

--activatable

--address=

--adjust-system-clock

--after

--after-cursor=

--all

--allow-interactive-authorization=

--are-updates-enabled

--as-pid2

--attr-match=

--attr-nomatch=

--attribute-walk

--augment-creds=

--auto-start=

--automount-property=

--automount=

--batch

--before

--bind-device=

--bind-ro=

--bind=

--boot

--boot=

--booted

--capability=

--case-sensitive[=BOOLEAN]

--cat

--cat-config

--catalog

--cert=

--chdir=

--check-inhibitors=

--children-max=

--chroot

--class=

--clean

--cleanup-db

--cname=

--collect

--commit

--compress

--confirm-spawn

--connections-max=

--console

--container

--copy

--copy-keymap

--copy-locale

--copy-root-password

--copy-timezone

--copy=

--cpu-affinity=

--cpu=

--crash-reboot

--crash-shell

--crash-vt=

--create

--cursor=

--daemon

--datagram

--debug

--debugger=

--default-standard-error=

--default-standard-output=

--delay=

--depth=

--description=

--device-id-of-file=

--diff=

--directory=

--disable-updates

--discover

--disk-usage

--dmesg

--drop-capability=

--dry-run

--dump-bus-properties

--dump-catalog

--dump-configuration-items

--dump-core

--echo

--enable-updates

--ephemeral

--event-timeout=

--exclude-prefix=

--exec-delay=

--exit

--exit-if-exists=

--expect-reply=

--export

--export-db

--export-prefix=

--fail

--failed

--fdname=

--field=

--fields

--file=

--firmware-setup

--flush

--follow

--force

--format=

--from-pattern=

--fsck=

--full

--fuzz=

--generators

--getter=PROG [OPTIONS...]'

--gid=

--global

--gnutls-log=

--grep=

--halt

--header

--help

--host=

--hostname=

--icon=

--id=

--identifier=

--image=

--inetd

--inline

--interface=

--interval=

--iterations=

--job-mode=

--keep-unit

--kernel

--key=

--keymap=

--keyname=

--kill-signal=

--kill-who=

--legend=

--level-prefix=

--lines=

--link-journal=

--list

--list-boots

--list-catalog

--listen-http=

--listen-https=

--listen-raw=

--listen=

--locale-messages=

--locale=

--log-color=

--log-level=

--log-location=

--log-priority=

--log-target=

--machine-id=

--machine=

--man=

--mangle

--match=

--max-addresses=

--merge

--message=

--mkdir

--mode=

--monitor

--multiple

--name-match=

--name=

--network-bridge=

--network-interface=

--network-ipvlan=

--network-macvlan=

--network-namespace-path=

--network-veth

--network-veth-extra=

--network-zone=

--new-id128

--nice=

--no-ask-password

--no-block

--no-convert

--no-full

--no-hostname

--no-legend

--no-new-privileges=

--no-output

--no-pager

--no-reload

--no-sync

--no-tail

--no-tty

--no-variables

--no-wall

--no-wtmp

--notify-ready=

--now

--on-active=

--on-boot=

--on-calendar=

--on-startup=

--on-unit-active=

--on-unit-inactive=

--oom-score-adjust=

--options=

--order

--order=

--output-fields=

--output=

--overlay-ro=

--overlay=

--owner=

--pager-end

--parent-match=

--path

--path-property=

--path=

--personality=

--pid=

--pipe

--pivot-root=

--plain

--plymouth

--port=

--poweroff

--prefix=

--preset-mode=

--pretty

--print

--print-path

--priority=

--private-network

--private-users

--private-users-chown

--private-users=

--profile=

--prompt

--prompt-hostname

--prompt-keymap

--prompt-locale

--prompt-root-password

--prompt-timezone

--property

--property-match=

--property=

--protocol=

--pty

--query

--query=

--quiet

--raw

--read-only

--ready

--reboot

--recursive

--recursive=

--register=

--reload

--remain-after-exit

--remove

--replace=

--require

--resolv-conf=

--resolve-names=

--reverse

--rlimit=

--root

--root-hash=

--root-password-file=

--root-password=

--root=

--rotate

--runtime

--save-state

--scope

--seal

--search=

--selinux-apifs-context=

--selinux-context=

--send-sighup

--seqpacket

--service-address=

--service-txt=

--service-type=

--service-watchdogs=

--setenv=

--settings=

--settle

--setup-keys

--setup-machine-id

--show-cursor

--show-machine

--show-status=

--show-transaction

--show-types

--signal=

--since

--since=

--size=

--slice=

--socket-property=

--split-mode

--start-exec-queue

--state=

--static

--status=

--stop-exec-queue

--strict

--subsystem-match=

--subsystem-nomatch=

--suffix=

--sync

--sysname-match=

--system

--system-call-filter=

--tag-match=

--template=

--test

--timeout-idle-sec=

--timeout=

--timer-property=

--timezone=

--tmpfs=

--to-pattern=

--transient

--trust=

--type=

--udev

--uid=

--umount

--unescape

--unique

--unit

--unit=

--until

--until=

--update-catalog

--url=

--user

--user-unit

--user-unit=

--user=

--usr

--utc

--uuid=

--vacuum-files=

--vacuum-size=

--vacuum-time=

--value

--verbose

--verify

--verify-key=

--verify=

--version

--vm

--volatile

--volatile=

--wait

--wall

--watch

--watch-bind=

--what=

--who=

--why=

--wtmp-only

-1

-4

-6

-A

-D

-E

-F

-G

-H

-I

-L

-M

-N

-N=

-P

-R

-S

-T

-U

-V

-Z

-a

-all

-b

-c

-c=

-d

-e

-e=

-f

-g

-h

-i

-j

-k

-l

-m

-n

-o

-p

-q

-r

-s

-t

-t=

-u

-v

-w

-x

-y

CPU

IO

Memory

audit

auto

cat

closed

dnsLINK [SERVER...]]

dnsovertlsLINK [MODE]]

dnssecLINK [MODE]]

domainLINK [DOMAIN...]]

driver

export

flush-caches

hibernate

hybrid-sleep

install

journal

json

json-pretty

json-sse

kernel

list

llmnrLINK [MODE]]

mdnsLINK [MODE]]

ntaLINK [DOMAIN...]]

openpgp

query

remove

reset-server-features

reset-statistics

revert

serviceNAME] TYPE] DOMAIN

short

short-full

short-iso

short-iso-precise

short-monotonic

short-precise

short-unix

statistics

status

stdout

strict

suspend

suspend-then-hibernate

syslog

tlsaFAMILY] DOMAIN[:PORT]...

update

verbose

with-unit

CONSTANTS¶

Various constant used and/or defined by systemd.

-1

's'

'y'

-0

-1

-EADDRINUSE

-EALREADY

-EBADF

-EBUSY

-ECHILD

-EDOM

-EEXIST

-EINVAL

-EIO

-EMFILE

-ENODATA

-ENOENT

-ENOMEDIUM

-ENOMEM

-ENOTCONN

-ENXIO

-EOPNOTSUPP

-EPERM

-ESOCKTNOSUPPORT

-ESRCH

-ESTALE

-EUNATCH

0

0755

1

10

19532

2

443

65

73

77

ACTION

AF_INET

AF_INET6

AF_NETLINK

AF_PACKET

AF_UNIX

AF_UNSPEC

AF_VSOCK

AND

CAP_A

CAP_B

CAP_C

CAP_DAC_OVERRIDE

CAP_FOWNER

CAP_MKNOD

CAP_SYS_ADMIN

CAP_SYS_MODULE

CAP_SYS_PTRACE

CAP_SYS_RAWIO

CLOCK_BOOTIME

CLOCK_BOOTTIME

CLOCK_BOOTTIME_ALARM

CLOCK_MONOTONIC

CLOCK_REALTIME

CLOCK_REALTIME_ALARM

CLONE_NEWNS

DEVPATH

EACCES

EPERM

EPIPE

EPOLLERR

EPOLLET

EPOLLHUP

EPOLLIN

EPOLLOUT

EPOLLPRI

EPOLLRDHUP

EUCLEAN

EXIT_ADDRESS_FAMILIES

EXIT_APPARMOR_PROFILE

EXIT_CACHE_DIRECTORY

EXIT_CAPABILITIES

EXIT_CGROUP

EXIT_CHDIR

EXIT_CHOWN

EXIT_CHROOT

EXIT_CONFIGURATION_DIRECTORY

EXIT_CONFIRM

EXIT_CPUAFFINITY

EXIT_EXEC

EXIT_FAILURE

EXIT_FDS

EXIT_GROUP

EXIT_INVALIDARGUMENT

EXIT_IOPRIO

EXIT_KEYRING

EXIT_LIMITS

EXIT_LOGS_DIRECTORY

EXIT_MEMORY

EXIT_NAMESPACE

EXIT_NETWORK

EXIT_NICE

EXIT_NOPERMISSION

EXIT_NOTCONFIGURED

EXIT_NOTIMPLEMENTED

EXIT_NOTINSTALLED

EXIT_NOTRUNNING

EXIT_NO_NEW_PRIVILEGES

EXIT_NUMA_POLICY

EXIT_OOM_ADJUST

EXIT_PAM

EXIT_PERSONALITY

EXIT_RUNTIME_DIRECTORY

EXIT_SECCOMP

EXIT_SECUREBITS

EXIT_SELINUX_CONTEXT

EXIT_SETSCHEDULER

EXIT_SETSID

EXIT_SIGNAL_MASK

EXIT_SMACK_PROCESS_LABEL

EXIT_STATE_DIRECTORY

EXIT_STDERR

EXIT_STDIN

EXIT_STDOUT

EXIT_SUCCESS

EXIT_TIMERSLACK

EXIT_USER

EX_CANTCREAT

EX_CONFIG

EX_DATAERR

EX_IOERR

EX_NOHOST

EX_NOINPUT

EX_NOPERM

EX_NOUSER

EX_OSERR

EX_OSFILE

EX_PROTOCOL

EX_SOFTWARE

EX_TEMPFAIL

EX_UNAVAILABLE

EX_USAGE

ExecStop=

GPT_FLAG_NO_AUTO

GPT_FLAG_NO_BLOCK_IO_PROTOCOL

GPT_FLAG_READ_ONLY

INIT_PROCESS

IN_ACCESS

IN_ATTRIB

IN_CLOSE_WRITE

IN_MASK_ADD

IN_ONESHOT

IPPROTO_SCTP

IPPROTO_UDPLITE

IPV6_RECVPKTINFO

IP_FREEBIND

IP_PKTINFO

LOGIN_PROCESS

LOG_ALERT

LOG_CRIT

LOG_DEBUG

LOG_EMERG

LOG_ERR

LOG_INFO

LOG_NOTICE

LOG_WARNING

MAP_ANON

MSDOS_SUPER_MAGIC

MS_SLAVE

NETLINK_PKTINFO

NUL

NULL

OR

O_NONBLOCK

O_PATH

P

PAM_SUCCESS

POLLERR

POLLHUP

POLLIN

POLLOUT

PROT_EXEC

PROT_WRITE

PR_SET_NO_NEW_PRIVS

RLIMIT_NICE

RLIMIT_NOFILE

RLIMIT_NPROC

SCHED_DEADLINE

SCHED_FIFO

SCHED_RR

SD_BUS_CREDS_AUDIT_LOGIN_UID

SD_BUS_CREDS_AUDIT_SESSION_ID

SD_BUS_CREDS_AUGMENT

SD_BUS_CREDS_BOUNDING_CAPS

SD_BUS_CREDS_CGROUP

SD_BUS_CREDS_CMDLINE

SD_BUS_CREDS_COMM

SD_BUS_CREDS_DESCRIPTION

SD_BUS_CREDS_EFFECTIVE_CAPS

SD_BUS_CREDS_EGID

SD_BUS_CREDS_EUID

SD_BUS_CREDS_EXE

SD_BUS_CREDS_FSGID

SD_BUS_CREDS_FSUID

SD_BUS_CREDS_GID

SD_BUS_CREDS_INHERITABLE_CAPS

SD_BUS_CREDS_OWNER_UID

SD_BUS_CREDS_PERMITTED_CAPS

SD_BUS_CREDS_PID

SD_BUS_CREDS_PPID

SD_BUS_CREDS_SELINUX_CONTEXT

SD_BUS_CREDS_SESSION

SD_BUS_CREDS_SGID

SD_BUS_CREDS_SLICE

SD_BUS_CREDS_SUID

SD_BUS_CREDS_SUPPLEMENTARY_GIDS

SD_BUS_CREDS_TID

SD_BUS_CREDS_TID_COMM

SD_BUS_CREDS_TTY

SD_BUS_CREDS_UID

SD_BUS_CREDS_UNIQUE_NAME

SD_BUS_CREDS_UNIT

SD_BUS_CREDS_USER_SLICE

SD_BUS_CREDS_USER_UNIT

SD_BUS_CREDS_WELL_KNOWN_NAMES

SD_BUS_ERROR_MAKE_CONST(name, message)

SD_BUS_ERROR_MAKE_CONST()

SD_BUS_ERROR_MAP(name, code)

SD_BUS_ERROR_MAP()

SD_BUS_ERROR_MAP_END

SD_BUS_ERROR_NO_MEMORY

SD_BUS_ERROR_NULL

SD_BUS_TYPE_ARRAY

SD_BUS_TYPE_BOOLEAN

SD_BUS_TYPE_BYTE

SD_BUS_TYPE_DICT_ENTRY_BEGIN

SD_BUS_TYPE_DICT_ENTRY_END

SD_BUS_TYPE_DOUBLE

SD_BUS_TYPE_INT16

SD_BUS_TYPE_INT32

SD_BUS_TYPE_INT64

SD_BUS_TYPE_OBJECT_PATH

SD_BUS_TYPE_SIGNATURE

SD_BUS_TYPE_STRING

SD_BUS_TYPE_STRUCT_BEGIN

SD_BUS_TYPE_STRUCT_END

SD_BUS_TYPE_UINT16

SD_BUS_TYPE_UINT32

SD_BUS_TYPE_UINT64

SD_BUS_TYPE_UNIX_FD

SD_BUS_TYPE_VARIANT

SD_EVENT_ARMED

SD_EVENT_EXITING

SD_EVENT_FINISHED

SD_EVENT_INITIAL

SD_EVENT_OFF

SD_EVENT_ON

SD_EVENT_ONESHOT

SD_EVENT_PENDING

SD_EVENT_PREPARING

SD_EVENT_PRIORITY_IDLE

SD_EVENT_PRIORITY_IMPORTANT

SD_EVENT_PRIORITY_NORMAL

SD_EVENT_RUNNING

SD_JOURNAL_APPEND

SD_JOURNAL_CURRENT_USER

SD_JOURNAL_INVALIDATE

SD_JOURNAL_LOCAL_ONLY

SD_JOURNAL_NOP

SD_JOURNAL_OS_ROOT

SD_JOURNAL_RUNTIME_ONLY

SD_JOURNAL_SYSTEM

SD_LISTEN_FDS_START

SD_WARNING

SEQNUM

SHM_EXEC

SIGABRT

SIGCHLD

SIGCONT

SIGHUP

SIGINT

SIGKILL

SIGPIPE

SIGPWR

SIGRTMIN+0

SIGRTMIN+1

SIGRTMIN+13

SIGRTMIN+14

SIGRTMIN+15

SIGRTMIN+16

SIGRTMIN+2

SIGRTMIN+20

SIGRTMIN+21

SIGRTMIN+22

SIGRTMIN+23

SIGRTMIN+24

SIGRTMIN+26

SIGRTMIN+27

SIGRTMIN+28

SIGRTMIN+3

SIGRTMIN+4

SIGRTMIN+5

SIGRTMIN+6

SIGSTOP

SIGSYS

SIGTERM

SIGUSR1

SIGUSR2

SIGWINCH

SIG_DFL

SOCK_DGRAM

SOCK_SEQPACKET

SOCK_STREAM

SUBSYSTEM

TCP_DEFER_ACCEPT

UINT64_MAX

USER_PROCESS

WCONTINUED

WEXITED

WSTOPPED

_NSIG

_SD_BUS_CREDS_ALL

a

activating

active

all

any

application/json

application/vnd.fdo.journal

auto

b

bad-setting

c

cgroup

d

deactivating

early

en

error

f

failed

false

h

host

https

i

inactive

ipc

keep-caps

kernel.modules_disabled

late

latest

libsystemd

link-local

loaded

localhost

m

masked

min

mips64-le-n32

mips64-n32

mnt

ms

multicast

n

name

native

net

never

no

nobody

none

not-found

o

p

path

pid

ppc

ppc-le

ppc64

ppc64-le

property

r

reloading

rhel-8.0

rhel-8.1

rhel-8.10

rhel-8.2

rhel-8.3

rhel-8.4

rhel-8.5

rhel-8.6

rhel-8.7

rhel-8.8

rhel-8.9

s

s390

s390x

simple

sl

symlink

tcp

text/event-stream

text/plain

u

udev_hwdb

udev_queue

us

user

uts

v

w

wl

ww

x

x32

x86

x86-64

yes

~

MISCELLANEOUS OPTIONS AND DIRECTIVES¶

Other configuration elements which don't fit in any of the above groups.

$LISTEN_FDS

A

A+

ANSI_COLOR=

AppArmorProfile=

BUG_REPORT_URL=

BUILD_ID=

Bind=

BindReadOnly=

Boot=

Bridge=

C

CHASSIS=

CPE_NAME=

CPUAffinity=

CPUSchedulingPolicy=

CPUSchedulingPriority=

CPUSchedulingResetOnFork=

CacheDirectory=

CacheDirectoryMode=

Capability=

Compress=

ConfigurationDirectory=

ConfigurationDirectoryMode=

D

DEPLOYMENT=

DropCapability=

Environment=

EnvironmentFile=

ExternalSizeMax=

F

FONT=

FONT_MAP=

FONT_UNIMAP=

ForwardToConsole=

ForwardToKMsg=

ForwardToSyslog=

ForwardToWall=

H

HOME_URL=

HandleHibernateKey=

HandleLidSwitch=

HandleLidSwitchDocked=

HandleLidSwitchExternalPower=

HandlePowerKey=

HandleRebootKey=

HandleSuspendKey=

HibernateKeyIgnoreInhibited=

HoldoffTimeoutSec=

Hostname=

ICON_NAME=

ID=

ID_AUTOSEAT

ID_FOR_SEAT

ID_LIKE=

ID_NET_LABEL_ONBOARD=

ID_NET_NAME_MAC=

ID_NET_NAME_ONBOARD=

ID_NET_NAME_PATH=

ID_NET_NAME_SLOT=

ID_SEAT

IOSchedulingClass=

IOSchedulingPriority=

IPVLAN=

IdleAction=

IdleActionSec=

IgnoreSIGPIPE=

InaccessiblePaths=

InhibitDelayMaxSec=

InhibitorsMax=

Interface=

JournalSizeMax=

KEYMAP=

KEYMAP_TOGGLE=

KeepFree=

KeyringMode=

KillExcludeUsers=

KillOnlyUsers=

KillSignal=

KillUserProcesses=

L

L+

LOCATION=

LidSwitchIgnoreInhibited=

LimitAS=

LimitCORE=

LimitCPU=

LimitDATA=

LimitFSIZE=

LimitLOCKS=

LimitMEMLOCK=

LimitMSGQUEUE=

LimitNICE=

LimitNOFILE=

LimitNPROC=