1SYSTEMD.DIRECTIVES(7)         systemd.directives         SYSTEMD.DIRECTIVES(7)
2
3
4

NAME

6       systemd.directives - Index of configuration directives
7

UNIT DIRECTIVES

9       Directives for configuring units, used in unit files.
10
11       Accept=
12           systemd.socket(5)
13
14       AccuracySec=
15           systemd.timer(5)
16
17       After=
18           systemd.unit(5)
19
20       Alias=
21           systemd.unit(5)
22
23       AllowIsolate=
24           systemd.unit(5)
25
26       AllowedCPUs=
27           systemd.resource-control(5)
28
29       AllowedMemoryNodes=
30           systemd.resource-control(5)
31
32       Also=
33           systemd.unit(5)
34
35       AmbientCapabilities=
36           systemd.exec(5)
37
38       AppArmorProfile=
39           systemd.exec(5)
40
41       AssertACPower=
42           systemd.unit(5)
43
44       AssertArchitecture=
45           systemd.unit(5)
46
47       AssertCPUFeature=
48           systemd.unit(5)
49
50       AssertCPUPressure=
51           systemd.unit(5)
52
53       AssertCPUs=
54           systemd.unit(5)
55
56       AssertCapability=
57           systemd.unit(5)
58
59       AssertControlGroupController=
60           systemd.unit(5)
61
62       AssertCredential=
63           systemd.unit(5)
64
65       AssertDirectoryNotEmpty=
66           systemd.unit(5)
67
68       AssertEnvironment=
69           systemd.unit(5)
70
71       AssertFileIsExecutable=
72           systemd.unit(5)
73
74       AssertFileNotEmpty=
75           systemd.unit(5)
76
77       AssertFirstBoot=
78           systemd.unit(5)
79
80       AssertGroup=
81           systemd.unit(5)
82
83       AssertHost=
84           systemd.unit(5)
85
86       AssertIOPressure=
87           systemd.unit(5)
88
89       AssertKernelCommandLine=
90           systemd.unit(5)
91
92       AssertKernelVersion=
93           systemd.unit(5)
94
95       AssertMemory=
96           systemd.unit(5)
97
98       AssertMemoryPressure=
99           systemd.unit(5)
100
101       AssertNeedsUpdate=
102           systemd.unit(5)
103
104       AssertOSRelease=
105           systemd.unit(5)
106
107       AssertPathExists=
108           systemd.unit(5)
109
110       AssertPathExistsGlob=
111           systemd.unit(5)
112
113       AssertPathIsDirectory=
114           systemd.unit(5)
115
116       AssertPathIsEncrypted=
117           systemd.unit(5)
118
119       AssertPathIsMountPoint=
120           systemd.unit(5)
121
122       AssertPathIsReadWrite=
123           systemd.unit(5)
124
125       AssertPathIsSymbolicLink=
126           systemd.unit(5)
127
128       AssertSecurity=
129           systemd.unit(5)
130
131       AssertUser=
132           systemd.unit(5)
133
134       AssertVirtualization=
135           systemd.unit(5)
136
137       BPFProgram=
138           systemd.resource-control(5)
139
140       Backlog=
141           systemd.socket(5)
142
143       Before=
144           systemd.unit(5)
145
146       BindIPv6Only=
147           systemd.socket(5)
148
149       BindPaths=
150           systemd.exec(5)
151
152       BindReadOnlyPaths=
153           systemd.exec(5)
154
155       BindToDevice=
156           systemd.socket(5)
157
158       BindsTo=
159           systemd.unit(5)
160
161       Broadcast=
162           systemd.socket(5)
163
164       BusName=
165           systemd.service(5)
166
167       CPUAccounting=
168           systemd.resource-control(5)
169
170       CPUAffinity=
171           systemd.exec(5)
172
173       CPUQuota=
174           systemd.resource-control(5)
175
176       CPUQuotaPeriodSec=
177           systemd.resource-control(5)
178
179       CPUSchedulingPolicy=
180           systemd.exec(5)
181
182       CPUSchedulingPriority=
183           systemd.exec(5)
184
185       CPUSchedulingResetOnFork=
186           systemd.exec(5)
187
188       CPUWeight=
189           systemd.resource-control(5)
190
191       CacheDirectory=
192           systemd.exec(5)
193
194       CacheDirectoryMode=
195           systemd.exec(5)
196
197       CapabilityBoundingSet=
198           systemd.exec(5)
199
200       CollectMode=
201           systemd.unit(5)
202
203       ConditionACPower=
204           systemd.unit(5)
205
206       ConditionArchitecture=
207           systemd.unit(5)
208
209       ConditionCPUFeature=
210           systemd.unit(5)
211
212       ConditionCPUPressure=
213           systemd.unit(5)
214
215       ConditionCPUs=
216           systemd.unit(5)
217
218       ConditionCapability=
219           systemd.unit(5)
220
221       ConditionControlGroupController=
222           systemd.unit(5)
223
224       ConditionCredential=
225           systemd.unit(5)
226
227       ConditionDirectoryNotEmpty=
228           systemd.unit(5)
229
230       ConditionEnvironment=
231           systemd.unit(5)
232
233       ConditionFileIsExecutable=
234           systemd.unit(5)
235
236       ConditionFileNotEmpty=
237           systemd.unit(5)
238
239       ConditionFirmware=
240           systemd.unit(5)
241
242       ConditionFirstBoot=
243           systemd.unit(5)
244
245       ConditionGroup=
246           systemd.unit(5)
247
248       ConditionHost=
249           systemd.unit(5)
250
251       ConditionIOPressure=
252           systemd.unit(5)
253
254       ConditionKernelCommandLine=
255           systemd.unit(5)
256
257       ConditionKernelVersion=
258           systemd.unit(5)
259
260       ConditionMemory=
261           systemd.unit(5)
262
263       ConditionMemoryPressure=
264           systemd.unit(5)
265
266       ConditionNeedsUpdate=
267           systemd.unit(5)
268
269       ConditionOSRelease=
270           systemd.unit(5)
271
272       ConditionPathExists=
273           systemd.unit(5)
274
275       ConditionPathExistsGlob=
276           systemd.unit(5)
277
278       ConditionPathIsDirectory=
279           systemd.unit(5)
280
281       ConditionPathIsEncrypted=
282           systemd.unit(5)
283
284       ConditionPathIsMountPoint=
285           systemd.unit(5)
286
287       ConditionPathIsReadWrite=
288           systemd.unit(5)
289
290       ConditionPathIsSymbolicLink=
291           systemd.unit(5)
292
293       ConditionSecurity=
294           systemd.unit(5)
295
296       ConditionUser=
297           systemd.unit(5)
298
299       ConditionVirtualization=
300           systemd.unit(5)
301
302       ConfigurationDirectory=
303           systemd.exec(5)
304
305       ConfigurationDirectoryMode=
306           systemd.exec(5)
307
308       Conflicts=
309           systemd.unit(5)
310
311       CoredumpFilter=
312           systemd.exec(5)
313
314       DefaultDependencies=
315           systemd.unit(5)
316
317       DefaultInstance=
318           systemd.unit(5)
319
320       DeferAcceptSec=
321           systemd.socket(5)
322
323       Delegate=
324           systemd.resource-control(5)
325
326       Description=
327           systemd.unit(5)
328
329       DeviceAllow=
330           systemd.resource-control(5)
331
332       DevicePolicy=
333           systemd.resource-control(5)
334
335       DirectoryMode=
336           systemd.automount(5), systemd.mount(5), systemd.path(5),
337           systemd.socket(5)
338
339       DirectoryNotEmpty=
340           systemd.path(5)
341
342       DisableControllers=
343           systemd.resource-control(5)
344
345       Documentation=
346           systemd.unit(5)
347
348       DynamicUser=
349           systemd.exec(5)
350
351       Environment=
352           systemd.exec(5)
353
354       EnvironmentFile=
355           systemd.exec(5)
356
357       ExecCondition=
358           systemd.service(5)
359
360       ExecPaths=
361           systemd.exec(5)
362
363       ExecReload=
364           systemd.service(5)
365
366       ExecSearchPath=
367           systemd.exec(5)
368
369       ExecStart=
370           systemd.service(5)
371
372       ExecStartPost=
373           systemd.service(5), systemd.socket(5)
374
375       ExecStartPre=
376           systemd.service(5), systemd.socket(5)
377
378       ExecStop=
379           systemd.service(5)
380
381       ExecStopPost=
382           systemd.service(5), systemd.socket(5)
383
384       ExecStopPre=
385           systemd.socket(5)
386
387       ExitType=
388           systemd.service(5)
389
390       ExtensionDirectories=
391           systemd.exec(5)
392
393       ExtensionImages=
394           systemd.exec(5)
395
396       ExtraOptions=
397           systemd.automount(5)
398
399       FailureAction=
400           systemd.unit(5)
401
402       FailureActionExitStatus=
403           systemd.unit(5)
404
405       FileDescriptorName=
406           systemd.socket(5)
407
408       FileDescriptorStoreMax=
409           systemd.service(5)
410
411       FinalKillSignal=
412           systemd.kill(5)
413
414       FixedRandomDelay=
415           systemd.timer(5)
416
417       FlushPending=
418           systemd.socket(5)
419
420       ForceUnmount=
421           systemd.mount(5)
422
423       FreeBind=
424           systemd.socket(5)
425
426       Group=
427           systemd.exec(5)
428
429       GuessMainPID=
430           systemd.service(5)
431
432       IOAccounting=
433           systemd.resource-control(5)
434
435       IODeviceLatencyTargetSec=
436           systemd.resource-control(5)
437
438       IODeviceWeight=
439           systemd.resource-control(5)
440
441       IOReadBandwidthMax=
442           systemd.resource-control(5)
443
444       IOReadIOPSMax=
445           systemd.resource-control(5)
446
447       IOSchedulingClass=
448           systemd.exec(5)
449
450       IOSchedulingPriority=
451           systemd.exec(5)
452
453       IOWeight=
454           systemd.resource-control(5)
455
456       IOWriteBandwidthMax=
457           systemd.resource-control(5)
458
459       IOWriteIOPSMax=
460           systemd.resource-control(5)
461
462       IPAccounting=
463           systemd.resource-control(5)
464
465       IPAddressAllow=
466           systemd.resource-control(5)
467
468       IPAddressDeny=
469           systemd.resource-control(5)
470
471       IPCNamespacePath=
472           systemd.exec(5)
473
474       IPEgressFilterPath=
475           systemd.resource-control(5)
476
477       IPIngressFilterPath=
478           systemd.resource-control(5)
479
480       IPTOS=
481           systemd.socket(5)
482
483       IPTTL=
484           systemd.socket(5)
485
486       IgnoreOnIsolate=
487           systemd.unit(5)
488
489       IgnoreSIGPIPE=
490           systemd.exec(5)
491
492       InaccessiblePaths=
493           systemd.exec(5)
494
495       JobRunningTimeoutSec=
496           systemd.unit(5)
497
498       JobTimeoutAction=
499           systemd.unit(5)
500
501       JobTimeoutRebootArgument=
502           systemd.unit(5)
503
504       JobTimeoutSec=
505           systemd.unit(5)
506
507       JoinsNamespaceOf=
508           systemd.unit(5)
509
510       KeepAlive=
511           systemd.socket(5)
512
513       KeepAliveIntervalSec=
514           systemd.socket(5)
515
516       KeepAliveProbes=
517           systemd.socket(5)
518
519       KeepAliveTimeSec=
520           systemd.socket(5)
521
522       KeyringMode=
523           systemd.exec(5)
524
525       KillMode=
526           systemd.kill(5)
527
528       KillSignal=
529           systemd.kill(5)
530
531       LazyUnmount=
532           systemd.mount(5)
533
534       LimitAS=
535           systemd.exec(5)
536
537       LimitCORE=
538           systemd.exec(5)
539
540       LimitCPU=
541           systemd.exec(5)
542
543       LimitDATA=
544           systemd.exec(5)
545
546       LimitFSIZE=
547           systemd.exec(5)
548
549       LimitLOCKS=
550           systemd.exec(5)
551
552       LimitMEMLOCK=
553           systemd.exec(5)
554
555       LimitMSGQUEUE=
556           systemd.exec(5)
557
558       LimitNICE=
559           systemd.exec(5)
560
561       LimitNOFILE=
562           systemd.exec(5)
563
564       LimitNPROC=
565           systemd.exec(5)
566
567       LimitRSS=
568           systemd.exec(5)
569
570       LimitRTPRIO=
571           systemd.exec(5)
572
573       LimitRTTIME=
574           systemd.exec(5)
575
576       LimitSIGPENDING=
577           systemd.exec(5)
578
579       LimitSTACK=
580           systemd.exec(5)
581
582       ListenDatagram=
583           systemd.socket(5)
584
585       ListenFIFO=
586           systemd.socket(5)
587
588       ListenMessageQueue=
589           systemd.socket(5)
590
591       ListenNetlink=
592           systemd.socket(5)
593
594       ListenSequentialPacket=
595           systemd.socket(5)
596
597       ListenSpecial=
598           systemd.socket(5)
599
600       ListenStream=
601           systemd.socket(5)
602
603       ListenUSBFunction=
604           systemd.socket(5)
605
606       LoadCredential=
607           systemd.exec(5)
608
609       LoadCredentialEncrypted=
610           systemd.exec(5)
611
612       LockPersonality=
613           systemd.exec(5)
614
615       LogExtraFields=
616           systemd.exec(5)
617
618       LogFilterPatterns=
619           systemd.exec(5)
620
621       LogLevelMax=
622           systemd.exec(5)
623
624       LogNamespace=
625           systemd.exec(5)
626
627       LogRateLimitBurst=
628           systemd.exec(5)
629
630       LogRateLimitIntervalSec=
631           systemd.exec(5)
632
633       LogsDirectory=
634           systemd.exec(5)
635
636       LogsDirectoryMode=
637           systemd.exec(5)
638
639       MakeDirectory=
640           systemd.path(5)
641
642       ManagedOOMMemoryPressure=
643           systemd.resource-control(5)
644
645       ManagedOOMMemoryPressureLimit=
646           systemd.resource-control(5)
647
648       ManagedOOMPreference=
649           systemd.resource-control(5)
650
651       ManagedOOMSwap=
652           systemd.resource-control(5)
653
654       Mark=
655           systemd.socket(5)
656
657       MaxConnections=
658           systemd.socket(5)
659
660       MaxConnectionsPerSource=
661           systemd.socket(5)
662
663       MemoryAccounting=
664           systemd.resource-control(5)
665
666       MemoryDenyWriteExecute=
667           systemd.exec(5)
668
669       MemoryHigh=
670           systemd.resource-control(5)
671
672       MemoryLow=
673           systemd.resource-control(5)
674
675       MemoryMax=
676           systemd.resource-control(5)
677
678       MemoryMin=
679           systemd.resource-control(5)
680
681       MemorySwapMax=
682           systemd.resource-control(5)
683
684       MemoryZSwapMax=
685           systemd.resource-control(5)
686
687       MessageQueueMaxMessages=
688           systemd.socket(5)
689
690       MessageQueueMessageSize=
691           systemd.socket(5)
692
693       MountAPIVFS=
694           systemd.exec(5)
695
696       MountFlags=
697           systemd.exec(5)
698
699       MountImages=
700           systemd.exec(5)
701
702       NUMAMask=
703           systemd.exec(5)
704
705       NUMAPolicy=
706           systemd.exec(5)
707
708       NetworkNamespacePath=
709           systemd.exec(5)
710
711       Nice=
712           systemd.exec(5)
713
714       NoDelay=
715           systemd.socket(5)
716
717       NoExecPaths=
718           systemd.exec(5)
719
720       NoNewPrivileges=
721           systemd.exec(5)
722
723       NonBlocking=
724           systemd.service(5)
725
726       NotifyAccess=
727           systemd.service(5)
728
729       OOMPolicy=
730           systemd.scope(5), systemd.service(5)
731
732       OOMScoreAdjust=
733           systemd.exec(5)
734
735       OnActiveSec=
736           systemd.timer(5)
737
738       OnBootSec=
739           systemd.timer(5)
740
741       OnCalendar=
742           systemd.timer(5)
743
744       OnClockChange=
745           systemd.timer(5)
746
747       OnFailure=
748           systemd.unit(5)
749
750       OnFailureJobMode=
751           systemd.unit(5)
752
753       OnStartupSec=
754           systemd.timer(5)
755
756       OnSuccess=
757           systemd.unit(5)
758
759       OnSuccessJobMode=
760           systemd.unit(5)
761
762       OnTimezoneChange=
763           systemd.timer(5)
764
765       OnUnitActiveSec=
766           systemd.timer(5)
767
768       OnUnitInactiveSec=
769           systemd.timer(5)
770
771       OpenFile=
772           systemd.service(5)
773
774       Options=
775           systemd.mount(5), systemd.swap(5)
776
777       PAMName=
778           systemd.exec(5)
779
780       PIDFile=
781           systemd.service(5)
782
783       PartOf=
784           systemd.unit(5)
785
786       PassCredentials=
787           systemd.socket(5)
788
789       PassEnvironment=
790           systemd.exec(5)
791
792       PassPacketInfo=
793           systemd.socket(5)
794
795       PassSecurity=
796           systemd.socket(5)
797
798       PathChanged=
799           systemd.path(5)
800
801       PathExists=
802           systemd.path(5)
803
804       PathExistsGlob=
805           systemd.path(5)
806
807       PathModified=
808           systemd.path(5)
809
810       Persistent=
811           systemd.timer(5)
812
813       Personality=
814           systemd.exec(5)
815
816       PipeSize=
817           systemd.socket(5)
818
819       Priority=
820           systemd.socket(5), systemd.swap(5)
821
822       PrivateDevices=
823           systemd.exec(5)
824
825       PrivateIPC=
826           systemd.exec(5)
827
828       PrivateMounts=
829           systemd.exec(5)
830
831       PrivateNetwork=
832           systemd.exec(5)
833
834       PrivateTmp=
835           systemd.exec(5)
836
837       PrivateUsers=
838           systemd.exec(5)
839
840       ProcSubset=
841           systemd.exec(5)
842
843       PropagatesReloadTo=
844           systemd.unit(5)
845
846       PropagatesStopTo=
847           systemd.unit(5)
848
849       ProtectClock=
850           systemd.exec(5)
851
852       ProtectControlGroups=
853           systemd.exec(5)
854
855       ProtectHome=
856           systemd.exec(5)
857
858       ProtectHostname=
859           systemd.exec(5)
860
861       ProtectKernelLogs=
862           systemd.exec(5)
863
864       ProtectKernelModules=
865           systemd.exec(5)
866
867       ProtectKernelTunables=
868           systemd.exec(5)
869
870       ProtectProc=
871           systemd.exec(5)
872
873       ProtectSystem=
874           systemd.exec(5)
875
876       RandomizedDelaySec=
877           systemd.timer(5)
878
879       ReadOnlyPaths=
880           systemd.exec(5)
881
882       ReadWriteOnly=
883           systemd.mount(5)
884
885       ReadWritePaths=
886           systemd.exec(5)
887
888       RebootArgument=
889           systemd.unit(5)
890
891       ReceiveBuffer=
892           systemd.socket(5)
893
894       RefuseManualStart=
895           systemd.unit(5)
896
897       RefuseManualStop=
898           systemd.unit(5)
899
900       ReloadPropagatedFrom=
901           systemd.unit(5)
902
903       ReloadSignal=
904           systemd.service(5)
905
906       RemainAfterElapse=
907           systemd.timer(5)
908
909       RemainAfterExit=
910           systemd.service(5)
911
912       RemoveIPC=
913           systemd.exec(5)
914
915       RemoveOnStop=
916           systemd.socket(5)
917
918       RequiredBy=
919           systemd.unit(5)
920
921       Requires=
922           systemd.unit(5)
923
924       RequiresMountsFor=
925           systemd.unit(5)
926
927       Requisite=
928           systemd.unit(5)
929
930       Restart=
931           systemd.service(5)
932
933       RestartForceExitStatus=
934           systemd.service(5)
935
936       RestartKillSignal=
937           systemd.kill(5)
938
939       RestartPreventExitStatus=
940           systemd.service(5)
941
942       RestartSec=
943           systemd.service(5)
944
945       RestrictAddressFamilies=
946           systemd.exec(5)
947
948       RestrictFileSystems=
949           systemd.exec(5)
950
951       RestrictNamespaces=
952           systemd.exec(5)
953
954       RestrictNetworkInterfaces=
955           systemd.resource-control(5)
956
957       RestrictRealtime=
958           systemd.exec(5)
959
960       RestrictSUIDSGID=
961           systemd.exec(5)
962
963       ReusePort=
964           systemd.socket(5)
965
966       RootDirectory=
967           systemd.exec(5)
968
969       RootDirectoryStartOnly=
970           systemd.service(5)
971
972       RootHash=
973           systemd.exec(5)
974
975       RootHashSignature=
976           systemd.exec(5)
977
978       RootImage=
979           systemd.exec(5)
980
981       RootImageOptions=
982           systemd.exec(5)
983
984       RootVerity=
985           systemd.exec(5)
986
987       RuntimeDirectory=
988           systemd.exec(5)
989
990       RuntimeDirectoryMode=
991           systemd.exec(5)
992
993       RuntimeDirectoryPreserve=
994           systemd.exec(5)
995
996       RuntimeMaxSec=
997           systemd.scope(5), systemd.service(5)
998
999       RuntimeRandomizedExtraSec=
1000           systemd.scope(5), systemd.service(5)
1001
1002       SELinuxContext=
1003           systemd.exec(5)
1004
1005       SELinuxContextFromNet=
1006           systemd.socket(5)
1007
1008       SecureBits=
1009           systemd.exec(5)
1010
1011       SendBuffer=
1012           systemd.socket(5)
1013
1014       SendSIGHUP=
1015           systemd.kill(5)
1016
1017       SendSIGKILL=
1018           systemd.kill(5)
1019
1020       Service=
1021           systemd.socket(5)
1022
1023       SetCredential=
1024           systemd.exec(5)
1025
1026       SetCredentialEncrypted=
1027           systemd.exec(5)
1028
1029       Slice=
1030           systemd.resource-control(5)
1031
1032       SloppyOptions=
1033           systemd.mount(5)
1034
1035       SmackLabel=
1036           systemd.socket(5)
1037
1038       SmackLabelIPIn=
1039           systemd.socket(5)
1040
1041       SmackLabelIPOut=
1042           systemd.socket(5)
1043
1044       SmackProcessLabel=
1045           systemd.exec(5)
1046
1047       SocketBindAllow=
1048           systemd.resource-control(5)
1049
1050       SocketBindDeny=
1051           systemd.resource-control(5)
1052
1053       SocketGroup=
1054           systemd.socket(5)
1055
1056       SocketMode=
1057           systemd.socket(5)
1058
1059       SocketProtocol=
1060           systemd.socket(5)
1061
1062       SocketUser=
1063           systemd.socket(5)
1064
1065       Sockets=
1066           systemd.service(5)
1067
1068       SourcePath=
1069           systemd.unit(5)
1070
1071       StandardError=
1072           systemd.exec(5)
1073
1074       StandardInput=
1075           systemd.exec(5)
1076
1077       StandardInputData=
1078           systemd.exec(5)
1079
1080       StandardInputText=
1081           systemd.exec(5)
1082
1083       StandardOutput=
1084           systemd.exec(5)
1085
1086       StartLimitAction=
1087           systemd.unit(5)
1088
1089       StartLimitBurst=
1090           systemd.unit(5)
1091
1092       StartLimitIntervalSec=
1093           systemd.unit(5)
1094
1095       StartupAllowedCPUs=
1096           systemd.resource-control(5)
1097
1098       StartupAllowedMemoryNodes=
1099           systemd.resource-control(5)
1100
1101       StartupCPUWeight=
1102           systemd.resource-control(5)
1103
1104       StartupIOWeight=
1105           systemd.resource-control(5)
1106
1107       StateDirectory=
1108           systemd.exec(5)
1109
1110       StateDirectoryMode=
1111           systemd.exec(5)
1112
1113       StopPropagatedFrom=
1114           systemd.unit(5)
1115
1116       StopWhenUnneeded=
1117           systemd.unit(5)
1118
1119       SuccessAction=
1120           systemd.unit(5)
1121
1122       SuccessActionExitStatus=
1123           systemd.unit(5)
1124
1125       SuccessExitStatus=
1126           systemd.service(5)
1127
1128       SupplementaryGroups=
1129           systemd.exec(5)
1130
1131       Symlinks=
1132           systemd.socket(5)
1133
1134       SyslogFacility=
1135           systemd.exec(5)
1136
1137       SyslogIdentifier=
1138           systemd.exec(5)
1139
1140       SyslogLevel=
1141           systemd.exec(5)
1142
1143       SyslogLevelPrefix=
1144           systemd.exec(5)
1145
1146       SystemCallArchitectures=
1147           systemd.exec(5)
1148
1149       SystemCallErrorNumber=
1150           systemd.exec(5)
1151
1152       SystemCallFilter=
1153           systemd.exec(5)
1154
1155       SystemCallLog=
1156           systemd.exec(5)
1157
1158       TCPCongestion=
1159           systemd.socket(5)
1160
1161       TTYColumns=
1162           systemd.exec(5)
1163
1164       TTYPath=
1165           systemd.exec(5)
1166
1167       TTYReset=
1168           systemd.exec(5)
1169
1170       TTYRows=
1171           systemd.exec(5)
1172
1173       TTYVHangup=
1174           systemd.exec(5)
1175
1176       TTYVTDisallocate=
1177           systemd.exec(5)
1178
1179       TasksAccounting=
1180           systemd.resource-control(5)
1181
1182       TasksMax=
1183           systemd.resource-control(5)
1184
1185       TemporaryFileSystem=
1186           systemd.exec(5)
1187
1188       TimeoutAbortSec=
1189           systemd.service(5)
1190
1191       TimeoutCleanSec=
1192           systemd.exec(5)
1193
1194       TimeoutIdleSec=
1195           systemd.automount(5)
1196
1197       TimeoutSec=
1198           systemd.mount(5), systemd.service(5), systemd.socket(5),
1199           systemd.swap(5)
1200
1201       TimeoutStartFailureMode=
1202           systemd.service(5)
1203
1204       TimeoutStartSec=
1205           systemd.service(5)
1206
1207       TimeoutStopFailureMode=
1208           systemd.service(5)
1209
1210       TimeoutStopSec=
1211           systemd.service(5)
1212
1213       TimerSlackNSec=
1214           systemd.exec(5)
1215
1216       Timestamping=
1217           systemd.socket(5)
1218
1219       Transparent=
1220           systemd.socket(5)
1221
1222       TriggerLimitBurst=
1223           systemd.path(5), systemd.socket(5)
1224
1225       TriggerLimitIntervalSec=
1226           systemd.path(5), systemd.socket(5)
1227
1228       Type=
1229           systemd.mount(5), systemd.service(5)
1230
1231       UMask=
1232           systemd.exec(5)
1233
1234       USBFunctionDescriptors=
1235           systemd.service(5)
1236
1237       USBFunctionStrings=
1238           systemd.service(5)
1239
1240       Unit=
1241           systemd.path(5), systemd.timer(5)
1242
1243       UnsetEnvironment=
1244           systemd.exec(5)
1245
1246       Upholds=
1247           systemd.unit(5)
1248
1249       User=
1250           systemd.exec(5)
1251
1252       UtmpIdentifier=
1253           systemd.exec(5)
1254
1255       UtmpMode=
1256           systemd.exec(5)
1257
1258       WakeSystem=
1259           systemd.timer(5)
1260
1261       WantedBy=
1262           systemd.unit(5)
1263
1264       Wants=
1265           systemd.unit(5)
1266
1267       WatchdogSec=
1268           systemd.service(5)
1269
1270       WatchdogSignal=
1271           systemd.kill(5)
1272
1273       What=
1274           systemd.mount(5), systemd.swap(5)
1275
1276       Where=
1277           systemd.automount(5), systemd.mount(5)
1278
1279       WorkingDirectory=
1280           systemd.exec(5)
1281
1282       Writable=
1283           systemd.socket(5)
1284

OPTIONS ON THE KERNEL COMMAND LINE

1286       Kernel boot options for configuring the behaviour of the systemd
1287       process.
1288
1289       -b
1290           kernel-command-line(7), systemd(1)
1291
1292       1
1293           kernel-command-line(7), systemd(1)
1294
1295       2
1296           kernel-command-line(7), systemd(1)
1297
1298       3
1299           kernel-command-line(7), systemd(1)
1300
1301       4
1302           kernel-command-line(7), systemd(1)
1303
1304       5
1305           kernel-command-line(7), systemd(1)
1306
1307       S
1308           kernel-command-line(7), systemd(1)
1309
1310       bond=
1311           systemd-network-generator.service(8)
1312
1313       bootdev=
1314           systemd-network-generator.service(8)
1315
1316       bridge=
1317           systemd-network-generator.service(8)
1318
1319       debug
1320           kernel-command-line(7), systemd(1)
1321
1322       domain=
1323           kernel-command-line(7), systemd-resolved.service(8)
1324
1325       emergency
1326           kernel-command-line(7), systemd(1)
1327
1328       fsck.mode=
1329           kernel-command-line(7), systemd-fsck@.service(8)
1330
1331       fsck.repair=
1332           kernel-command-line(7), systemd-fsck@.service(8)
1333
1334       fstab=
1335           kernel-command-line(7), systemd-fstab-generator(8)
1336
1337       ifname=
1338           systemd-network-generator.service(8)
1339
1340       ip=
1341           systemd-network-generator.service(8)
1342
1343       locale.LANG=
1344           kernel-command-line(7), systemd(1)
1345
1346       locale.LANGUAGE=
1347           kernel-command-line(7), systemd(1)
1348
1349       locale.LC_ADDRESS=
1350           kernel-command-line(7), systemd(1)
1351
1352       locale.LC_COLLATE=
1353           kernel-command-line(7), systemd(1)
1354
1355       locale.LC_CTYPE=
1356           kernel-command-line(7), systemd(1)
1357
1358       locale.LC_IDENTIFICATION=
1359           kernel-command-line(7), systemd(1)
1360
1361       locale.LC_MEASUREMENT=
1362           kernel-command-line(7), systemd(1)
1363
1364       locale.LC_MESSAGES=
1365           kernel-command-line(7), systemd(1)
1366
1367       locale.LC_MONETARY=
1368           kernel-command-line(7), systemd(1)
1369
1370       locale.LC_NAME=
1371           kernel-command-line(7), systemd(1)
1372
1373       locale.LC_NUMERIC=
1374           kernel-command-line(7), systemd(1)
1375
1376       locale.LC_PAPER=
1377           kernel-command-line(7), systemd(1)
1378
1379       locale.LC_TELEPHONE=
1380           kernel-command-line(7), systemd(1)
1381
1382       locale.LC_TIME=
1383           kernel-command-line(7), systemd(1)
1384
1385       luks.crypttab=
1386           kernel-command-line(7), systemd-cryptsetup-generator(8)
1387
1388       luks.data=
1389           systemd-cryptsetup-generator(8)
1390
1391       luks.key=
1392           kernel-command-line(7), systemd-cryptsetup-generator(8)
1393
1394       luks.name=
1395           kernel-command-line(7), systemd-cryptsetup-generator(8)
1396
1397       luks.options=
1398           kernel-command-line(7), systemd-cryptsetup-generator(8)
1399
1400       luks.uuid=
1401           kernel-command-line(7), systemd-cryptsetup-generator(8)
1402
1403       luks=
1404           kernel-command-line(7), systemd-cryptsetup-generator(8)
1405
1406       modules_load=
1407           kernel-command-line(7), systemd-modules-load.service(8)
1408
1409       mount.usr=
1410           kernel-command-line(7), systemd-fstab-generator(8)
1411
1412       mount.usrflags=
1413           kernel-command-line(7), systemd-fstab-generator(8)
1414
1415       mount.usrfstype=
1416           kernel-command-line(7), systemd-fstab-generator(8)
1417
1418       nameserver=
1419           kernel-command-line(7), systemd-resolved.service(8)
1420
1421       net.ifname-policy=
1422           systemd-network-generator.service(8), systemd-udevd.service(8)
1423
1424       net.ifnames=
1425           kernel-command-line(7), systemd-udevd.service(8)
1426
1427       net.naming-scheme=
1428           kernel-command-line(7), systemd-udevd.service(8)
1429
1430       noresume
1431           systemd-hibernate-resume-generator(8)
1432
1433       plymouth.enable=
1434           kernel-command-line(7)
1435
1436       quiet
1437           kernel-command-line(7), systemd(1)
1438
1439       quotacheck.mode=
1440           kernel-command-line(7), systemd-quotacheck.service(8)
1441
1442       rd.emergency
1443           kernel-command-line(7), systemd(1)
1444
1445       rd.fstab=
1446           kernel-command-line(7), systemd-fstab-generator(8)
1447
1448       rd.luks.crypttab=
1449           kernel-command-line(7), systemd-cryptsetup-generator(8)
1450
1451       rd.luks.data=
1452           systemd-cryptsetup-generator(8)
1453
1454       rd.luks.key=
1455           kernel-command-line(7), systemd-cryptsetup-generator(8)
1456
1457       rd.luks.name=
1458           kernel-command-line(7), systemd-cryptsetup-generator(8)
1459
1460       rd.luks.options=
1461           kernel-command-line(7), systemd-cryptsetup-generator(8)
1462
1463       rd.luks.uuid=
1464           kernel-command-line(7), systemd-cryptsetup-generator(8)
1465
1466       rd.luks=
1467           kernel-command-line(7), systemd-cryptsetup-generator(8)
1468
1469       rd.modules_load=
1470           kernel-command-line(7), systemd-modules-load.service(8)
1471
1472       rd.peerdns=
1473           systemd-network-generator.service(8)
1474
1475       rd.rescue
1476           kernel-command-line(7), systemd(1)
1477
1478       rd.route=
1479           systemd-network-generator.service(8)
1480
1481       rd.systemd.gpt_auto
1482           systemd-gpt-auto-generator(8)
1483
1484       rd.systemd.gpt_auto=
1485           kernel-command-line(7)
1486
1487       rd.systemd.unit=
1488           kernel-command-line(7), systemd(1)
1489
1490       rd.systemd.verity=
1491           kernel-command-line(7), systemd-veritysetup-generator(8)
1492
1493       rd.udev.blockdev_read_only
1494           kernel-command-line(7), systemd-udevd.service(8)
1495
1496       rd.udev.children_max=
1497           kernel-command-line(7), systemd-udevd.service(8)
1498
1499       rd.udev.event_timeout=
1500           kernel-command-line(7), systemd-udevd.service(8)
1501
1502       rd.udev.exec_delay=
1503           kernel-command-line(7), systemd-udevd.service(8)
1504
1505       rd.udev.log_level=
1506           kernel-command-line(7), systemd-udevd.service(8)
1507
1508       rd.udev.timeout_signal=
1509           kernel-command-line(7), systemd-udevd.service(8)
1510
1511       rd.veritytab=
1512           kernel-command-line(7)
1513
1514       rescue
1515           kernel-command-line(7), systemd(1)
1516
1517       resume=
1518           kernel-command-line(7), systemd-hibernate-resume-generator(8)
1519
1520       resumeflags=
1521           kernel-command-line(7), systemd-hibernate-resume-generator(8)
1522
1523       ro
1524           kernel-command-line(7), systemd-gpt-auto-generator(8)
1525
1526       root=
1527           kernel-command-line(7), systemd-fstab-generator(8), systemd-gpt-
1528           auto-generator(8)
1529
1530       rootflags=
1531           kernel-command-line(7), systemd-fstab-generator(8), systemd-gpt-
1532           auto-generator(8)
1533
1534       rootfstype=
1535           kernel-command-line(7), systemd-fstab-generator(8), systemd-gpt-
1536           auto-generator(8)
1537
1538       roothash=
1539           kernel-command-line(7), systemd-fstab-generator(8), systemd-
1540           veritysetup-generator(8)
1541
1542       rw
1543           kernel-command-line(7), systemd-gpt-auto-generator(8)
1544
1545       s
1546           kernel-command-line(7), systemd(1)
1547
1548       single
1549           kernel-command-line(7), systemd(1)
1550
1551       systemd.clock-usec=
1552           kernel-command-line(7)
1553
1554       systemd.condition-first-boot=
1555           kernel-command-line(7)
1556
1557       systemd.condition-needs-update=
1558           kernel-command-line(7)
1559
1560       systemd.confirm_spawn
1561           kernel-command-line(7), systemd(1)
1562
1563       systemd.cpu_affinity=
1564           kernel-command-line(7)
1565
1566       systemd.crash_chvt
1567           kernel-command-line(7), systemd(1)
1568
1569       systemd.crash_reboot
1570           kernel-command-line(7), systemd(1)
1571
1572       systemd.crash_shell
1573           kernel-command-line(7), systemd(1)
1574
1575       systemd.debug_shell
1576           kernel-command-line(7)
1577
1578       systemd.default_standard_error=
1579           kernel-command-line(7), systemd(1)
1580
1581       systemd.default_standard_output=
1582           kernel-command-line(7), systemd(1)
1583
1584       systemd.default_timeout_start_sec=
1585           kernel-command-line(7)
1586
1587       systemd.dump_core
1588           kernel-command-line(7), systemd(1)
1589
1590       systemd.early_core_pattern=
1591           kernel-command-line(7)
1592
1593       systemd.firstboot=
1594           kernel-command-line(7), systemd-firstboot(1)
1595
1596       systemd.getty_auto=
1597           kernel-command-line(7), systemd-getty-generator(8)
1598
1599       systemd.gpt_auto
1600           systemd-gpt-auto-generator(8)
1601
1602       systemd.gpt_auto=
1603           kernel-command-line(7)
1604
1605       systemd.hostname=
1606           kernel-command-line(7)
1607
1608       systemd.import_credentials=
1609           kernel-command-line(7), systemd(1)
1610
1611       systemd.journald.forward_to_console=
1612           kernel-command-line(7), systemd-journald.service(8)
1613
1614       systemd.journald.forward_to_kmsg=
1615           kernel-command-line(7), systemd-journald.service(8)
1616
1617       systemd.journald.forward_to_syslog=
1618           kernel-command-line(7), systemd-journald.service(8)
1619
1620       systemd.journald.forward_to_wall=
1621           kernel-command-line(7), systemd-journald.service(8)
1622
1623       systemd.log_color
1624           kernel-command-line(7), systemd(1)
1625
1626       systemd.log_level=
1627           kernel-command-line(7), systemd(1)
1628
1629       systemd.log_location
1630           systemd(1)
1631
1632       systemd.log_location=
1633           kernel-command-line(7)
1634
1635       systemd.log_target=
1636           kernel-command-line(7), systemd(1)
1637
1638       systemd.log_tid
1639           systemd(1)
1640
1641       systemd.log_time
1642           systemd(1)
1643
1644       systemd.machine_id=
1645           kernel-command-line(7), systemd(1)
1646
1647       systemd.mask=
1648           kernel-command-line(7)
1649
1650       systemd.random-seed=
1651           kernel-command-line(7)
1652
1653       systemd.reload_limit_burst=
1654           kernel-command-line(7)
1655
1656       systemd.reload_limit_interval_sec=
1657           kernel-command-line(7)
1658
1659       systemd.restore_state=
1660           kernel-command-line(7), systemd-backlight@.service(8), systemd-
1661           rfkill.service(8)
1662
1663       systemd.run=
1664           kernel-command-line(7)
1665
1666       systemd.run_failure_action=
1667           kernel-command-line(7)
1668
1669       systemd.run_success_action=
1670           kernel-command-line(7)
1671
1672       systemd.service_watchdogs
1673           kernel-command-line(7)
1674
1675       systemd.service_watchdogs=
1676           systemd(1)
1677
1678       systemd.set_credential=
1679           kernel-command-line(7), systemd(1)
1680
1681       systemd.setenv=
1682           kernel-command-line(7), systemd(1)
1683
1684       systemd.show_status
1685           kernel-command-line(7), systemd(1)
1686
1687       systemd.status_unit_format=
1688           kernel-command-line(7), systemd(1)
1689
1690       systemd.swap=
1691           systemd-fstab-generator(8)
1692
1693       systemd.unit=
1694           kernel-command-line(7), systemd(1)
1695
1696       systemd.verity.root_options=
1697           kernel-command-line(7)
1698
1699       systemd.verity=
1700           kernel-command-line(7), systemd-veritysetup-generator(8)
1701
1702       systemd.verity_root_data=
1703           kernel-command-line(7), systemd-veritysetup-generator(8)
1704
1705       systemd.verity_root_hash=
1706           kernel-command-line(7), systemd-veritysetup-generator(8)
1707
1708       systemd.verity_root_options=
1709           systemd-veritysetup-generator(8)
1710
1711       systemd.verity_usr_data=
1712           kernel-command-line(7), systemd-veritysetup-generator(8)
1713
1714       systemd.verity_usr_hash=
1715           kernel-command-line(7), systemd-veritysetup-generator(8)
1716
1717       systemd.verity_usr_options=
1718           kernel-command-line(7), systemd-veritysetup-generator(8)
1719
1720       systemd.volatile=
1721           kernel-command-line(7), systemd-fstab-generator(8)
1722
1723       systemd.wants=
1724           kernel-command-line(7)
1725
1726       systemd.watchdog_device=
1727           kernel-command-line(7)
1728
1729       systemd.watchdog_pre_sec=
1730           kernel-command-line(7)
1731
1732       systemd.watchdog_pretimeout_governor=
1733           kernel-command-line(7)
1734
1735       systemd.watchdog_sec=
1736           kernel-command-line(7)
1737
1738       udev.blockdev_read_only
1739           kernel-command-line(7), systemd-udevd.service(8)
1740
1741       udev.children_max=
1742           kernel-command-line(7), systemd-udevd.service(8)
1743
1744       udev.event_timeout=
1745           kernel-command-line(7), systemd-udevd.service(8)
1746
1747       udev.exec_delay=
1748           kernel-command-line(7), systemd-udevd.service(8)
1749
1750       udev.log_level=
1751           kernel-command-line(7), systemd-udevd.service(8)
1752
1753       udev.timeout_signal=
1754           kernel-command-line(7), systemd-udevd.service(8)
1755
1756       usrhash=
1757           kernel-command-line(7), systemd-fstab-generator(8), systemd-
1758           veritysetup-generator(8)
1759
1760       vconsole.font=
1761           kernel-command-line(7), vconsole.conf(5)
1762
1763       vconsole.font_map=
1764           kernel-command-line(7), vconsole.conf(5)
1765
1766       vconsole.font_unimap=
1767           kernel-command-line(7), vconsole.conf(5)
1768
1769       vconsole.keymap=
1770           kernel-command-line(7), vconsole.conf(5)
1771
1772       vconsole.keymap_toggle=
1773           kernel-command-line(7), vconsole.conf(5)
1774
1775       veritytab=
1776           kernel-command-line(7)
1777
1778       vlan=
1779           systemd-network-generator.service(8)
1780

ENVIRONMENT VARIABLES

1782       Environment variables understood by the systemd manager and other
1783       programs and environment variable-compatible settings.
1784
1785       $CACHE_DIRECTORY
1786           systemd.exec(5)
1787
1788       $CONFIGURATION_DIRECTORY
1789           systemd.exec(5)
1790
1791       $CREDENTIALS_DIRECTORY
1792           systemd.exec(5)
1793
1794       $EMAIL
1795           pam_systemd(8)
1796
1797       $EXIT_CODE
1798           systemd.exec(5)
1799
1800       $EXIT_STATUS
1801           systemd.exec(5)
1802
1803       $HOME
1804           systemd.exec(5)
1805
1806       $INVOCATION_ID
1807           systemd.exec(5)
1808
1809       $JOURNAL_STREAM
1810           systemd.exec(5)
1811
1812       $LANG
1813           pam_systemd(8), systemd.exec(5)
1814
1815       $LISTEN_FDNAMES
1816           sd_listen_fds(3), systemd(1), systemd-socket-activate(1),
1817           systemd.exec(5)
1818
1819       $LISTEN_FDS
1820           sd_listen_fds(3), systemd(1), systemd-socket-activate(1),
1821           systemd.exec(5)
1822
1823       $LISTEN_PID
1824           sd_listen_fds(3), systemd(1), systemd-socket-activate(1),
1825           systemd.exec(5)
1826
1827       $LOGNAME
1828           systemd.exec(5)
1829
1830       $LOGS_DIRECTORY
1831           systemd.exec(5)
1832
1833       $LOG_NAMESPACE
1834           systemd.exec(5)
1835
1836       $MAINPID
1837           systemd.exec(5)
1838
1839       $MANAGERPID
1840           systemd.exec(5)
1841
1842       $MONITOR_EXIT_CODE
1843           systemd.exec(5)
1844
1845       $MONITOR_EXIT_STATUS
1846           systemd.exec(5)
1847
1848       $MONITOR_INVOCATION_ID
1849           systemd.exec(5)
1850
1851       $MONITOR_SERVICE_RESULT
1852           systemd.exec(5)
1853
1854       $MONITOR_UNIT
1855           systemd.exec(5)
1856
1857       $NOTIFY_SOCKET
1858           sd_notify(3), systemd(1), systemd.exec(5)
1859
1860       $PATH
1861           systemd.exec(5)
1862
1863       $PIDFILE
1864           systemd.exec(5)
1865
1866       $PREVLEVEL
1867           runlevel(8)
1868
1869       $RUNLEVEL
1870           runlevel(8)
1871
1872       $RUNTIME_DIRECTORY
1873           systemd.exec(5)
1874
1875       $SERVICE_RESULT
1876           systemd.exec(5)
1877
1878       $SHELL
1879           systemd.exec(5)
1880
1881       $STATE_DIRECTORY
1882           systemd.exec(5)
1883
1884       $SYSTEMD_ARCHITECTURE
1885           systemd.generator(7)
1886
1887       $SYSTEMD_COLORS
1888           homectl(1), journalctl(1), localectl(1), loginctl(1),
1889           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1890           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
1891           tmpfiles(8), timedatectl(1), userdbctl(1)
1892
1893       $SYSTEMD_DEBUGGER
1894           coredumpctl(1)
1895
1896       $SYSTEMD_EDITOR
1897           systemctl(1)
1898
1899       $SYSTEMD_ENVIRONMENT_GENERATOR_PATH
1900           systemd(1)
1901
1902       $SYSTEMD_EXEC_PID
1903           systemd.exec(5)
1904
1905       $SYSTEMD_FIRST_BOOT
1906           systemd.generator(7)
1907
1908       $SYSTEMD_GENERATOR_PATH
1909           systemd(1)
1910
1911       $SYSTEMD_GETTY_AUTO
1912           systemd-getty-generator(8)
1913
1914       $SYSTEMD_HOME=
1915           pam_systemd_home(8)
1916
1917       $SYSTEMD_HOME_SUSPEND=
1918           pam_systemd_home(8)
1919
1920       $SYSTEMD_IN_INITRD
1921           systemd.generator(7)
1922
1923       $SYSTEMD_LESS
1924           homectl(1), journalctl(1), localectl(1), loginctl(1),
1925           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1926           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
1927           tmpfiles(8), timedatectl(1), userdbctl(1)
1928
1929       $SYSTEMD_LESSCHARSET
1930           homectl(1), journalctl(1), localectl(1), loginctl(1),
1931           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1932           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
1933           tmpfiles(8), timedatectl(1), userdbctl(1)
1934
1935       $SYSTEMD_LOG_COLOR
1936           homectl(1), journalctl(1), localectl(1), loginctl(1),
1937           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1938           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-socket-
1939           activate(1), systemd-tmpfiles(8), timedatectl(1), userdbctl(1)
1940
1941       $SYSTEMD_LOG_LEVEL
1942           homectl(1), journalctl(1), localectl(1), loginctl(1),
1943           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1944           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-socket-
1945           activate(1), systemd-tmpfiles(8), timedatectl(1), userdbctl(1)
1946
1947       $SYSTEMD_LOG_LOCATION
1948           homectl(1), journalctl(1), localectl(1), loginctl(1),
1949           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1950           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-socket-
1951           activate(1), systemd-tmpfiles(8), timedatectl(1), userdbctl(1)
1952
1953       $SYSTEMD_LOG_TARGET
1954           homectl(1), journalctl(1), localectl(1), loginctl(1),
1955           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1956           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-socket-
1957           activate(1), systemd-tmpfiles(8), timedatectl(1), userdbctl(1)
1958
1959       $SYSTEMD_LOG_TID
1960           homectl(1), journalctl(1), localectl(1), loginctl(1),
1961           machinectl(1), portablectl(1), systemd(1), systemd-analyze(1),
1962           systemd-inhibit(1), systemd-nspawn(1), timedatectl(1), userdbctl(1)
1963
1964       $SYSTEMD_LOG_TIME
1965           homectl(1), journalctl(1), localectl(1), loginctl(1),
1966           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1967           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-socket-
1968           activate(1), systemd-tmpfiles(8), timedatectl(1), userdbctl(1)
1969
1970       $SYSTEMD_NSS_RESOLVE_CACHE
1971           nss-resolve(8)
1972
1973       $SYSTEMD_NSS_RESOLVE_NETWORK
1974           nss-resolve(8)
1975
1976       $SYSTEMD_NSS_RESOLVE_SYNTHESIZE
1977           nss-resolve(8)
1978
1979       $SYSTEMD_NSS_RESOLVE_TRUST_ANCHOR
1980           nss-resolve(8)
1981
1982       $SYSTEMD_NSS_RESOLVE_VALIDATE
1983           nss-resolve(8)
1984
1985       $SYSTEMD_NSS_RESOLVE_ZONE
1986           nss-resolve(8)
1987
1988       $SYSTEMD_PAGER
1989           homectl(1), journalctl(1), localectl(1), loginctl(1),
1990           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1991           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
1992           tmpfiles(8), timedatectl(1), userdbctl(1)
1993
1994       $SYSTEMD_PAGERSECURE
1995           homectl(1), journalctl(1), localectl(1), loginctl(1),
1996           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
1997           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
1998           tmpfiles(8), timedatectl(1), userdbctl(1)
1999
2000       $SYSTEMD_RANDOM_SEED_CREDIT
2001           systemd-random-seed.service(8)
2002
2003       $SYSTEMD_SCOPE
2004           systemd.generator(7)
2005
2006       $SYSTEMD_UNIT_PATH
2007           systemd(1)
2008
2009       $SYSTEMD_URLIFY
2010           homectl(1), journalctl(1), localectl(1), loginctl(1),
2011           machinectl(1), portablectl(1), systemctl(1), systemd(1), systemd-
2012           analyze(1), systemd-inhibit(1), systemd-nspawn(1), systemd-
2013           tmpfiles(8), timedatectl(1), userdbctl(1)
2014
2015       $SYSTEMD_VIRTUALIZATION
2016           systemd.generator(7)
2017
2018       $TERM
2019           systemd.exec(5)
2020
2021       $TRIGGER_PATH
2022           systemd.exec(5)
2023
2024       $TRIGGER_TIMER_MONOTONIC_USEC
2025           systemd.exec(5)
2026
2027       $TRIGGER_TIMER_REALTIME_USEC
2028           systemd.exec(5)
2029
2030       $TRIGGER_UNIT
2031           systemd.exec(5)
2032
2033       $TZ
2034           pam_systemd(8)
2035
2036       $USER
2037           systemd.exec(5)
2038
2039       $WATCHDOG_PID
2040           sd_watchdog_enabled(3), systemd.exec(5)
2041
2042       $WATCHDOG_USEC
2043           sd_watchdog_enabled(3), systemd.exec(5)
2044
2045       $XDG_CONFIG_DIRS
2046           systemd(1)
2047
2048       $XDG_CONFIG_HOME
2049           systemd(1)
2050
2051       $XDG_DATA_DIRS
2052           systemd(1)
2053
2054       $XDG_DATA_HOME
2055           systemd(1)
2056
2057       $XDG_RUNTIME_DIR
2058           pam_systemd(8), systemd.exec(5)
2059
2060       $XDG_SEAT
2061           pam_systemd(8)
2062
2063       $XDG_SESSION_CLASS
2064           pam_systemd(8)
2065
2066       $XDG_SESSION_DESKTOP
2067           pam_systemd(8)
2068
2069       $XDG_SESSION_ID
2070           pam_systemd(8)
2071
2072       $XDG_SESSION_TYPE
2073           pam_systemd(8)
2074
2075       $XDG_VTNR
2076           pam_systemd(8)
2077
2078       ANSI_COLOR=
2079           os-release(5)
2080
2081       ARCHITECTURE=
2082           os-release(5)
2083
2084       BUG_REPORT_URL=
2085           os-release(5)
2086
2087       BUILD_ID=
2088           os-release(5)
2089
2090       CHASSIS=
2091           machine-info(5)
2092
2093       CPE_NAME=
2094           os-release(5)
2095
2096       DEFAULT_HOSTNAME=
2097           os-release(5)
2098
2099       DEPLOYMENT=
2100           machine-info(5)
2101
2102       DOCUMENTATION_URL=
2103           os-release(5)
2104
2105       FONT=
2106           vconsole.conf(5)
2107
2108       FONT_MAP=
2109           vconsole.conf(5)
2110
2111       FONT_UNIMAP=
2112           vconsole.conf(5)
2113
2114       HARDWARE_MODEL=
2115           machine-info(5)
2116
2117       HARDWARE_VENDOR=
2118           machine-info(5)
2119
2120       HOME_URL=
2121           os-release(5)
2122
2123       ICON_NAME=
2124           machine-info(5)
2125
2126       ID=
2127           os-release(5)
2128
2129       ID_LIKE=
2130           os-release(5)
2131
2132       IMAGE_ID=
2133           os-release(5)
2134
2135       IMAGE_VERSION=
2136           os-release(5)
2137
2138       KEYMAP=
2139           vconsole.conf(5)
2140
2141       KEYMAP_TOGGLE=
2142           vconsole.conf(5)
2143
2144       LOCATION=
2145           machine-info(5)
2146
2147       LOGO=
2148           os-release(5)
2149
2150       NAME=
2151           os-release(5)
2152
2153       PORTABLE_PREFIXES=
2154           os-release(5)
2155
2156       PRETTY_HOSTNAME=
2157           machine-info(5)
2158
2159       PRETTY_NAME=
2160           os-release(5)
2161
2162       PRIVACY_POLICY_URL=
2163           os-release(5)
2164
2165       SUPPORT_END=
2166           os-release(5)
2167
2168       SUPPORT_URL=
2169           os-release(5)
2170
2171       SYSEXT_LEVEL=
2172           os-release(5)
2173
2174       SYSEXT_SCOPE=
2175           os-release(5)
2176
2177       VARIANT=
2178           os-release(5)
2179
2180       VARIANT_ID=
2181           os-release(5)
2182
2183       VERSION=
2184           os-release(5)
2185
2186       VERSION_CODENAME=
2187           os-release(5)
2188
2189       VERSION_ID=
2190           os-release(5)
2191