-
Notifications
You must be signed in to change notification settings - Fork 80
/
Copy pathgit-maintenance.html
1070 lines (1068 loc) · 58.7 KB
/
git-maintenance.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<meta name="generator" content="Asciidoctor 2.0.23"/>
<title>git-maintenance(1)</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"/>
<style>
/*! Asciidoctor default stylesheet | MIT License | https://asciidoctor.org */
/* Uncomment the following line when using as a custom stylesheet */
/* @import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"; */
html{font-family:sans-serif;-webkit-text-size-adjust:100%}
a{background:none}
a:focus{outline:thin dotted}
a:active,a:hover{outline:0}
h1{font-size:2em;margin:.67em 0}
b,strong{font-weight:bold}
abbr{font-size:.9em}
abbr[title]{cursor:help;border-bottom:1px dotted #dddddf;text-decoration:none}
dfn{font-style:italic}
hr{height:0}
mark{background:#ff0;color:#000}
code,kbd,pre,samp{font-family:monospace;font-size:1em}
pre{white-space:pre-wrap}
q{quotes:"\201C" "\201D" "\2018" "\2019"}
small{font-size:80%}
sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
sup{top:-.5em}
sub{bottom:-.25em}
img{border:0}
svg:not(:root){overflow:hidden}
figure{margin:0}
audio,video{display:inline-block}
audio:not([controls]){display:none;height:0}
fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
legend{border:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
button,input{line-height:normal}
button,select{text-transform:none}
button,html input[type=button],input[type=reset],input[type=submit]{-webkit-appearance:button;cursor:pointer}
button[disabled],html input[disabled]{cursor:default}
input[type=checkbox],input[type=radio]{padding:0}
button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
textarea{overflow:auto;vertical-align:top}
table{border-collapse:collapse;border-spacing:0}
*,::before,::after{box-sizing:border-box}
html,body{font-size:100%}
body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;line-height:1;position:relative;cursor:auto;-moz-tab-size:4;-o-tab-size:4;tab-size:4;word-wrap:anywhere;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
a:hover{cursor:pointer}
img,object,embed{max-width:100%;height:auto}
object,embed{height:100%}
img{-ms-interpolation-mode:bicubic}
.left{float:left!important}
.right{float:right!important}
.text-left{text-align:left!important}
.text-right{text-align:right!important}
.text-center{text-align:center!important}
.text-justify{text-align:justify!important}
.hide{display:none}
img,object,svg{display:inline-block;vertical-align:middle}
textarea{height:auto;min-height:50px}
select{width:100%}
.subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0}
a{color:#2156a5;text-decoration:underline;line-height:inherit}
a:hover,a:focus{color:#1d4b8f}
a img{border:0}
p{line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
p aside{font-size:.875em;line-height:1.35;font-style:italic}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
h1{font-size:2.125em}
h2{font-size:1.6875em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
h4,h5{font-size:1.125em}
h6{font-size:1em}
hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em}
em,i{font-style:italic;line-height:inherit}
strong,b{font-weight:bold;line-height:inherit}
small{font-size:60%;line-height:inherit}
code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
ul,ol,dl{line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
ul,ol{margin-left:1.5em}
ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0}
ul.circle{list-style-type:circle}
ul.disc{list-style-type:disc}
ul.square{list-style-type:square}
ul.circle ul:not([class]),ul.disc ul:not([class]),ul.square ul:not([class]){list-style:inherit}
ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
dl dt{margin-bottom:.3125em;font-weight:bold}
dl dd{margin-bottom:1.25em}
blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
h1{font-size:2.75em}
h2{font-size:2.3125em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
h4{font-size:1.4375em}}
table{background:#fff;margin-bottom:1.25em;border:1px solid #dedede;word-wrap:normal}
table thead,table tfoot{background:#f7f8f7}
table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
table tr.even,table tr.alt{background:#f8f8f7}
table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{line-height:1.6}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
.center{margin-left:auto;margin-right:auto}
.stretch{width:100%}
.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
.clearfix::after,.float-group::after{clear:both}
:not(pre).nobreak{word-wrap:normal}
:not(pre).nowrap{white-space:nowrap}
:not(pre).pre-wrap{white-space:pre-wrap}
:not(pre):not([class^=L])>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background:#f7f7f8;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed}
pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed}
pre code,pre pre{color:inherit;font-size:inherit;line-height:inherit}
pre>code{display:block}
pre.nowrap,pre.nowrap pre{white-space:pre;word-wrap:normal}
em em{font-style:normal}
strong strong{font-weight:400}
.keyseq{color:rgba(51,51,51,.8)}
kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background:#f7f7f7;border:1px solid #ccc;border-radius:3px;box-shadow:0 1px 0 rgba(0,0,0,.2),inset 0 0 0 .1em #fff;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
.keyseq kbd:first-child{margin-left:0}
.keyseq kbd:last-child{margin-right:0}
.menuseq,.menuref{color:#000}
.menuseq b:not(.caret),.menuref{font-weight:inherit}
.menuseq{word-spacing:-.02em}
.menuseq b.caret{font-size:1.25em;line-height:.8}
.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
b.button::before{content:"[";padding:0 3px 0 2px}
b.button::after{content:"]";padding:0 2px 0 3px}
p a>code:hover{color:rgba(0,0,0,.9)}
#header,#content,#footnotes,#footer{width:100%;margin:0 auto;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
#content{margin-top:1.25em}
#content::before{content:none}
#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
#header>h1:only-child{border-bottom:1px solid #dddddf;padding-bottom:8px}
#header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:flex;flex-flow:row wrap}
#header .details span:first-child{margin-left:-.125em}
#header .details span.email a{color:rgba(0,0,0,.85)}
#header .details br{display:none}
#header .details br+span::before{content:"\00a0\2013\00a0"}
#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
#header .details br+span#revremark::before{content:"\00a0|\00a0"}
#header #revnumber{text-transform:capitalize}
#header #revnumber::after{content:"\00a0"}
#content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
#toc>ul{margin-left:.125em}
#toc ul.sectlevel0>li>a{font-style:italic}
#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
#toc li{line-height:1.3334;margin-top:.3334em}
#toc a{text-decoration:none}
#toc a:active{text-decoration:underline}
#toctitle{color:#7a2518;font-size:1.2em}
@media screen and (min-width:768px){#toctitle{font-size:1.375em}
body.toc2{padding-left:15em;padding-right:0}
body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
#toc.toc2{margin-top:0!important;background:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
#toc.toc2>ul{font-size:.9em;margin-bottom:0}
#toc.toc2 ul ul{margin-left:0;padding-left:1em}
#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
body.toc2.toc-right{padding-left:0;padding-right:15em}
body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
#toc.toc2{width:20em}
#toc.toc2 #toctitle{font-size:1.375em}
#toc.toc2>ul{font-size:.95em}
#toc.toc2 ul ul{padding-left:1.25em}
body.toc2.toc-right{padding-left:0;padding-right:20em}}
#content #toc{border:1px solid #e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;border-radius:4px}
#content #toc>:first-child{margin-top:0}
#content #toc>:last-child{margin-bottom:0}
#footer{max-width:none;background:rgba(0,0,0,.8);padding:1.25em}
#footer-text{color:hsla(0,0%,100%,.8);line-height:1.44}
#content{margin-bottom:.625em}
.sect1{padding-bottom:.625em}
@media screen and (min-width:768px){#content{margin-bottom:1.25em}
.sect1{padding-bottom:1.25em}}
.sect1:last-child{padding-bottom:0}
.sect1+.sect1{border-top:1px solid #e7e7e9}
#content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
#content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
#content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
#content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
#content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
details,.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
details{margin-left:1.25rem}
details>summary{cursor:pointer;display:block;position:relative;line-height:1.6;margin-bottom:.625rem;outline:none;-webkit-tap-highlight-color:transparent}
details>summary::-webkit-details-marker{display:none}
details>summary::before{content:"";border:solid transparent;border-left:solid;border-width:.3em 0 .3em .5em;position:absolute;top:.5em;left:-1.25rem;transform:translateX(15%)}
details[open]>summary::before{border:solid transparent;border-top:solid;border-width:.5em .3em 0;transform:translateY(15%)}
details>summary::after{content:"";width:1.25rem;height:1em;position:absolute;top:.3em;left:-1.25rem}
.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
.paragraph.lead>p,#preamble>.sectionbody>[class=paragraph]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
.admonitionblock>table td.icon{text-align:center;width:80px}
.admonitionblock>table td.icon img{max-width:none}
.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6);word-wrap:anywhere}
.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
.exampleblock>.content{border:1px solid #e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;border-radius:4px}
.sidebarblock{border:1px solid #dbdbd6;margin-bottom:1.25em;padding:1.25em;background:#f3f3f2;border-radius:4px}
.sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}
.exampleblock>.content>:first-child,.sidebarblock>.content>:first-child{margin-top:0}
.exampleblock>.content>:last-child,.exampleblock>.content>:last-child>:last-child,.exampleblock>.content .olist>ol>li:last-child>:last-child,.exampleblock>.content .ulist>ul>li:last-child>:last-child,.exampleblock>.content .qlist>ol>li:last-child>:last-child,.sidebarblock>.content>:last-child,.sidebarblock>.content>:last-child>:last-child,.sidebarblock>.content .olist>ol>li:last-child>:last-child,.sidebarblock>.content .ulist>ul>li:last-child>:last-child,.sidebarblock>.content .qlist>ol>li:last-child>:last-child{margin-bottom:0}
.literalblock pre,.listingblock>.content>pre{border-radius:4px;overflow-x:auto;padding:1em;font-size:.8125em}
@media screen and (min-width:768px){.literalblock pre,.listingblock>.content>pre{font-size:.90625em}}
@media screen and (min-width:1280px){.literalblock pre,.listingblock>.content>pre{font-size:1em}}
.literalblock pre,.listingblock>.content>pre:not(.highlight),.listingblock>.content>pre[class=highlight],.listingblock>.content>pre[class^="highlight "]{background:#f7f7f8}
.literalblock.output pre{color:#f7f7f8;background:rgba(0,0,0,.9)}
.listingblock>.content{position:relative}
.listingblock code[data-lang]::before{display:none;content:attr(data-lang);position:absolute;font-size:.75em;top:.425rem;right:.5rem;line-height:1;text-transform:uppercase;color:inherit;opacity:.5}
.listingblock:hover code[data-lang]::before{display:block}
.listingblock.terminal pre .command::before{content:attr(data-prompt);padding-right:.5em;color:inherit;opacity:.5}
.listingblock.terminal pre .command:not([data-prompt])::before{content:"$"}
.listingblock pre.highlightjs{padding:0}
.listingblock pre.highlightjs>code{padding:1em;border-radius:4px}
.listingblock pre.prettyprint{border-width:0}
.prettyprint{background:#f7f7f8}
pre.prettyprint .linenums{line-height:1.45;margin-left:2em}
pre.prettyprint li{background:none;list-style-type:inherit;padding-left:0}
pre.prettyprint li code[data-lang]::before{opacity:1}
pre.prettyprint li:not(:first-child) code[data-lang]::before{display:none}
table.linenotable{border-collapse:separate;border:0;margin-bottom:0;background:none}
table.linenotable td[class]{color:inherit;vertical-align:top;padding:0;line-height:inherit;white-space:normal}
table.linenotable td.code{padding-left:.75em}
table.linenotable td.linenos,pre.pygments .linenos{border-right:1px solid;opacity:.35;padding-right:.5em;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
pre.pygments span.linenos{display:inline-block;margin-right:.75em}
.quoteblock{margin:0 1em 1.25em 1.5em;display:table}
.quoteblock:not(.excerpt)>.title{margin-left:-1.5em;margin-bottom:.75em}
.quoteblock blockquote,.quoteblock p{color:rgba(0,0,0,.85);font-size:1.15rem;line-height:1.75;word-spacing:.1em;letter-spacing:0;font-style:italic;text-align:justify}
.quoteblock blockquote{margin:0;padding:0;border:0}
.quoteblock blockquote::before{content:"\201c";float:left;font-size:2.75em;font-weight:bold;line-height:.6em;margin-left:-.6em;color:#7a2518;text-shadow:0 1px 2px rgba(0,0,0,.1)}
.quoteblock blockquote>.paragraph:last-child p{margin-bottom:0}
.quoteblock .attribution{margin-top:.75em;margin-right:.5ex;text-align:right}
.verseblock{margin:0 1em 1.25em}
.verseblock pre{font-family:"Open Sans","DejaVu Sans",sans-serif;font-size:1.15rem;color:rgba(0,0,0,.85);font-weight:300;text-rendering:optimizeLegibility}
.verseblock pre strong{font-weight:400}
.verseblock .attribution{margin-top:1.25rem;margin-left:.5ex}
.quoteblock .attribution,.verseblock .attribution{font-size:.9375em;line-height:1.45;font-style:italic}
.quoteblock .attribution br,.verseblock .attribution br{display:none}
.quoteblock .attribution cite,.verseblock .attribution cite{display:block;letter-spacing:-.025em;color:rgba(0,0,0,.6)}
.quoteblock.abstract blockquote::before,.quoteblock.excerpt blockquote::before,.quoteblock .quoteblock blockquote::before{display:none}
.quoteblock.abstract blockquote,.quoteblock.abstract p,.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{line-height:1.6;word-spacing:0}
.quoteblock.abstract{margin:0 1em 1.25em;display:block}
.quoteblock.abstract>.title{margin:0 0 .375em;font-size:1.15em;text-align:center}
.quoteblock.excerpt>blockquote,.quoteblock .quoteblock{padding:0 0 .25em 1em;border-left:.25em solid #dddddf}
.quoteblock.excerpt,.quoteblock .quoteblock{margin-left:0}
.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{color:inherit;font-size:1.0625rem}
.quoteblock.excerpt .attribution,.quoteblock .quoteblock .attribution{color:inherit;font-size:.85rem;text-align:left;margin-right:0}
p.tableblock:last-child{margin-bottom:0}
td.tableblock>.content{margin-bottom:1.25em;word-wrap:anywhere}
td.tableblock>.content>:last-child{margin-bottom:-1.25em}
table.tableblock,th.tableblock,td.tableblock{border:0 solid #dedede}
table.grid-all>*>tr>*{border-width:1px}
table.grid-cols>*>tr>*{border-width:0 1px}
table.grid-rows>*>tr>*{border-width:1px 0}
table.frame-all{border-width:1px}
table.frame-ends{border-width:1px 0}
table.frame-sides{border-width:0 1px}
table.frame-none>colgroup+*>:first-child>*,table.frame-sides>colgroup+*>:first-child>*{border-top-width:0}
table.frame-none>:last-child>:last-child>*,table.frame-sides>:last-child>:last-child>*{border-bottom-width:0}
table.frame-none>*>tr>:first-child,table.frame-ends>*>tr>:first-child{border-left-width:0}
table.frame-none>*>tr>:last-child,table.frame-ends>*>tr>:last-child{border-right-width:0}
table.stripes-all>*>tr,table.stripes-odd>*>tr:nth-of-type(odd),table.stripes-even>*>tr:nth-of-type(even),table.stripes-hover>*>tr:hover{background:#f8f8f7}
th.halign-left,td.halign-left{text-align:left}
th.halign-right,td.halign-right{text-align:right}
th.halign-center,td.halign-center{text-align:center}
th.valign-top,td.valign-top{vertical-align:top}
th.valign-bottom,td.valign-bottom{vertical-align:bottom}
th.valign-middle,td.valign-middle{vertical-align:middle}
table thead th,table tfoot th{font-weight:bold}
tbody tr th{background:#f7f8f7}
tbody tr th,tbody tr th p,tfoot tr th,tfoot tr th p{color:rgba(0,0,0,.8);font-weight:bold}
p.tableblock>code:only-child{background:none;padding:0}
p.tableblock{font-size:1em}
ol{margin-left:1.75em}
ul li ol{margin-left:1.5em}
dl dd{margin-left:1.125em}
dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}
li p,ul dd,ol dd,.olist .olist,.ulist .ulist,.ulist .olist,.olist .ulist{margin-bottom:.625em}
ul.checklist,ul.none,ol.none,ul.no-bullet,ol.no-bullet,ol.unnumbered,ul.unstyled,ol.unstyled{list-style-type:none}
ul.no-bullet,ol.no-bullet,ol.unnumbered{margin-left:.625em}
ul.unstyled,ol.unstyled{margin-left:0}
li>p:empty:only-child::before{content:"";display:inline-block}
ul.checklist>li>p:first-child{margin-left:-1em}
ul.checklist>li>p:first-child>.fa-square-o:first-child,ul.checklist>li>p:first-child>.fa-check-square-o:first-child{width:1.25em;font-size:.8em;position:relative;bottom:.125em}
ul.checklist>li>p:first-child>input[type=checkbox]:first-child{margin-right:.25em}
ul.inline{display:flex;flex-flow:row wrap;list-style:none;margin:0 0 .625em -1.25em}
ul.inline>li{margin-left:1.25em}
.unstyled dl dt{font-weight:400;font-style:normal}
ol.arabic{list-style-type:decimal}
ol.decimal{list-style-type:decimal-leading-zero}
ol.loweralpha{list-style-type:lower-alpha}
ol.upperalpha{list-style-type:upper-alpha}
ol.lowerroman{list-style-type:lower-roman}
ol.upperroman{list-style-type:upper-roman}
ol.lowergreek{list-style-type:lower-greek}
.hdlist>table,.colist>table{border:0;background:none}
.hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}
td.hdlist1,td.hdlist2{vertical-align:top;padding:0 .625em}
td.hdlist1{font-weight:bold;padding-bottom:1.25em}
td.hdlist2{word-wrap:anywhere}
.literalblock+.colist,.listingblock+.colist{margin-top:-.5em}
.colist td:not([class]):first-child{padding:.4em .75em 0;line-height:1;vertical-align:top}
.colist td:not([class]):first-child img{max-width:none}
.colist td:not([class]):last-child{padding:.25em 0}
.thumb,.th{line-height:0;display:inline-block;border:4px solid #fff;box-shadow:0 0 0 1px #ddd}
.imageblock.left{margin:.25em .625em 1.25em 0}
.imageblock.right{margin:.25em 0 1.25em .625em}
.imageblock>.title{margin-bottom:0}
.imageblock.thumb,.imageblock.th{border-width:6px}
.imageblock.thumb>.title,.imageblock.th>.title{padding:0 .125em}
.image.left,.image.right{margin-top:.25em;margin-bottom:.25em;display:inline-block;line-height:0}
.image.left{margin-right:.625em}
.image.right{margin-left:.625em}
a.image{text-decoration:none;display:inline-block}
a.image object{pointer-events:none}
sup.footnote,sup.footnoteref{font-size:.875em;position:static;vertical-align:super}
sup.footnote a,sup.footnoteref a{text-decoration:none}
sup.footnote a:active,sup.footnoteref a:active,#footnotes .footnote a:first-of-type:active{text-decoration:underline}
#footnotes{padding-top:.75em;padding-bottom:.75em;margin-bottom:.625em}
#footnotes hr{width:20%;min-width:6.25em;margin:-.25em 0 .75em;border-width:1px 0 0}
#footnotes .footnote{padding:0 .375em 0 .225em;line-height:1.3334;font-size:.875em;margin-left:1.2em;margin-bottom:.2em}
#footnotes .footnote a:first-of-type{font-weight:bold;text-decoration:none;margin-left:-1.05em}
#footnotes .footnote:last-of-type{margin-bottom:0}
#content #footnotes{margin-top:-.625em;margin-bottom:0;padding:.75em 0}
div.unbreakable{page-break-inside:avoid}
.big{font-size:larger}
.small{font-size:smaller}
.underline{text-decoration:underline}
.overline{text-decoration:overline}
.line-through{text-decoration:line-through}
.aqua{color:#00bfbf}
.aqua-background{background:#00fafa}
.black{color:#000}
.black-background{background:#000}
.blue{color:#0000bf}
.blue-background{background:#0000fa}
.fuchsia{color:#bf00bf}
.fuchsia-background{background:#fa00fa}
.gray{color:#606060}
.gray-background{background:#7d7d7d}
.green{color:#006000}
.green-background{background:#007d00}
.lime{color:#00bf00}
.lime-background{background:#00fa00}
.maroon{color:#600000}
.maroon-background{background:#7d0000}
.navy{color:#000060}
.navy-background{background:#00007d}
.olive{color:#606000}
.olive-background{background:#7d7d00}
.purple{color:#600060}
.purple-background{background:#7d007d}
.red{color:#bf0000}
.red-background{background:#fa0000}
.silver{color:#909090}
.silver-background{background:#bcbcbc}
.teal{color:#006060}
.teal-background{background:#007d7d}
.white{color:#bfbfbf}
.white-background{background:#fafafa}
.yellow{color:#bfbf00}
.yellow-background{background:#fafa00}
span.icon>.fa{cursor:default}
a span.icon>.fa{cursor:inherit}
.admonitionblock td.icon [class^="fa icon-"]{font-size:2.5em;text-shadow:1px 1px 2px rgba(0,0,0,.5);cursor:default}
.admonitionblock td.icon .icon-note::before{content:"\f05a";color:#19407c}
.admonitionblock td.icon .icon-tip::before{content:"\f0eb";text-shadow:1px 1px 2px rgba(155,155,0,.8);color:#111}
.admonitionblock td.icon .icon-warning::before{content:"\f071";color:#bf6900}
.admonitionblock td.icon .icon-caution::before{content:"\f06d";color:#bf3400}
.admonitionblock td.icon .icon-important::before{content:"\f06a";color:#bf0000}
.conum[data-value]{display:inline-block;color:#fff!important;background:rgba(0,0,0,.8);border-radius:50%;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
.conum[data-value] *{color:#fff!important}
.conum[data-value]+b{display:none}
.conum[data-value]::after{content:attr(data-value)}
pre .conum[data-value]{position:relative;top:-.125em}
b.conum *{color:inherit!important}
.conum:not([data-value]):empty{display:none}
dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
h1,h2,p,td.content,span.alt,summary{letter-spacing:-.01em}
p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
p,blockquote,dt,td.content,td.hdlist1,span.alt,summary{font-size:1.0625rem}
p{margin-bottom:1.25rem}
.sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
.exampleblock>.content{background:#fffef7;border-color:#e0e0dc;box-shadow:0 1px 4px #e0e0dc}
.print-only{display:none!important}
@page{margin:1.25cm .75cm}
@media print{*{box-shadow:none!important;text-shadow:none!important}
html{font-size:80%}
a{color:inherit!important;text-decoration:underline!important}
a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
abbr[title]{border-bottom:1px dotted}
abbr[title]::after{content:" (" attr(title) ")"}
pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
thead{display:table-header-group}
svg{max-width:100%}
p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
#header,#content,#footnotes,#footer{max-width:none}
#toc,.sidebarblock,.exampleblock>.content{background:none!important}
#toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
body.book #header{text-align:center}
body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
body.book #header .details{border:0!important;display:block;padding:0!important}
body.book #header .details span:first-child{margin-left:0!important}
body.book #header .details br{display:block}
body.book #header .details br+span::before{content:none!important}
body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}
body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}
.listingblock code[data-lang]::before{display:block}
#footer{padding:0 .9375em}
.hide-on-print{display:none!important}
.print-only{display:block!important}
.hide-for-print{display:none!important}
.show-for-print{display:inherit!important}}
@media amzn-kf8,print{#header>h1:first-child{margin-top:1.25rem}
.sect1{padding:0!important}
.sect1+.sect1{border:0}
#footer{background:none}
#footer-text{color:rgba(0,0,0,.6);font-size:.9em}}
@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
</style>
<style>
pre>code {
display: inline;
}
</style>
</head>
<body class="manpage">
<div id="header">
<h1>git-maintenance(1) Manual Page</h1>
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<p>git-maintenance - Run tasks to optimize Git repository data</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="verseblock">
<pre class="content"><em>git maintenance</em> run [<options>]
<em>git maintenance</em> start [--scheduler=<scheduler>]
<em>git maintenance</em> (stop|register|unregister) [<options>]</pre>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Run tasks to optimize Git repository data, speeding up other Git commands
and reducing storage requirements for the repository.</p>
</div>
<div class="paragraph">
<p>Git commands that add repository data, such as <code>git</code> <code>add</code> or <code>git</code> <code>fetch</code>,
are optimized for a responsive user experience. These commands do not take
time to optimize the Git data, since such optimizations scale with the full
size of the repository while these user commands each perform a relatively
small action.</p>
</div>
<div class="paragraph">
<p>The <code>git</code> <code>maintenance</code> command provides flexibility for how to optimize the
Git repository.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_subcommands">SUBCOMMANDS</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">run</dt>
<dd>
<p>Run one or more maintenance tasks. If one or more <code>--task</code> options
are specified, then those tasks are run in that order. Otherwise,
the tasks are determined by which <code>maintenance.</code><em><task></em><code>.enabled</code>
config options are true. By default, only <code>maintenance.gc.enabled</code>
is true.</p>
</dd>
<dt class="hdlist1">start</dt>
<dd>
<p>Start running maintenance on the current repository. This performs
the same config updates as the <code>register</code> subcommand, then updates
the background scheduler to run <code>git</code> <code>maintenance</code> <code>run</code> <code>--scheduled</code>
on an hourly basis.</p>
</dd>
<dt class="hdlist1">stop</dt>
<dd>
<p>Halt the background maintenance schedule. The current repository
is not removed from the list of maintained repositories, in case
the background maintenance is restarted later.</p>
</dd>
<dt class="hdlist1">register</dt>
<dd>
<p>Initialize Git config values so any scheduled maintenance will start
running on this repository. This adds the repository to the
<code>maintenance.repo</code> config variable in the current user’s global config,
or the config specified by --config-file option, and enables some
recommended configuration values for <code>maintenance.</code><em><task></em><code>.schedule</code>. The
tasks that are enabled are safe for running in the background without
disrupting foreground processes.</p>
<div class="paragraph">
<p>The <code>register</code> subcommand will also set the <code>maintenance.strategy</code> config
value to <code>incremental</code>, if this value is not previously set. The
<code>incremental</code> strategy uses the following schedule for each maintenance
task:</p>
</div>
<div class="openblock">
<div class="content">
<div class="ulist">
<ul>
<li>
<p><code>gc</code>: disabled.</p>
</li>
<li>
<p><code>commit-graph</code>: hourly.</p>
</li>
<li>
<p><code>prefetch</code>: hourly.</p>
</li>
<li>
<p><code>loose-objects</code>: daily.</p>
</li>
<li>
<p><code>incremental-repack</code>: daily.</p>
</li>
</ul>
</div>
</div>
</div>
<div class="paragraph">
<p><code>git</code> <code>maintenance</code> <code>register</code> will also disable foreground maintenance by
setting <code>maintenance.auto</code> <code>=</code> <code>false</code> in the current repository. This config
setting will remain after a <code>git</code> <code>maintenance</code> <code>unregister</code> command.</p>
</div>
</dd>
<dt class="hdlist1">unregister</dt>
<dd>
<p>Remove the current repository from background maintenance. This
only removes the repository from the configured list. It does not
stop the background maintenance processes from running.</p>
<div class="paragraph">
<p>The <code>unregister</code> subcommand will report an error if the current repository
is not already registered. Use the <code>--force</code> option to return success even
when the current repository is not registered.</p>
</div>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_tasks">TASKS</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">commit-graph</dt>
<dd>
<p>The <code>commit-graph</code> job updates the <code>commit-graph</code> files incrementally,
then verifies that the written data is correct. The incremental
write is safe to run alongside concurrent Git processes since it
will not expire .<code>graph</code> files that were in the previous
<code>commit-graph-chain</code> file. They will be deleted by a later run based
on the expiration delay.</p>
</dd>
<dt class="hdlist1">prefetch</dt>
<dd>
<p>The <code>prefetch</code> task updates the object directory with the latest
objects from all registered remotes. For each remote, a <code>git</code> <code>fetch</code>
command is run. The configured refspec is modified to place all
requested refs within <code>refs/prefetch/</code>. Also, tags are not updated.</p>
<div class="paragraph">
<p>This is done to avoid disrupting the remote-tracking branches. The end users
expect these refs to stay unmoved unless they initiate a fetch. However,
with the prefetch task, the objects necessary to complete a later real fetch
would already be obtained, making the real fetch faster. In the ideal case,
it will just become an update to a bunch of remote-tracking branches without
any object transfer.</p>
</div>
<div class="paragraph">
<p>The <code>remote.</code><em><name></em><code>.skipFetchAll</code> configuration can be used to
exclude a particular remote from getting prefetched.</p>
</div>
</dd>
<dt class="hdlist1">gc</dt>
<dd>
<p>Clean up unnecessary files and optimize the local repository. "GC"
stands for "garbage collection," but this task performs many
smaller tasks. This task can be expensive for large repositories,
as it repacks all Git objects into a single pack-file. It can also
be disruptive in some situations, as it deletes stale data. See
<a href="git-gc.html">git-gc(1)</a> for more details on garbage collection in Git.</p>
</dd>
<dt class="hdlist1">loose-objects</dt>
<dd>
<p>The <code>loose-objects</code> job cleans up loose objects and places them into
pack-files. In order to prevent race conditions with concurrent Git
commands, it follows a two-step process. First, it deletes any loose
objects that already exist in a pack-file; concurrent Git processes
will examine the pack-file for the object data instead of the loose
object. Second, it creates a new pack-file (starting with "loose-")
containing a batch of loose objects. The batch size is limited to 50
thousand objects to prevent the job from taking too long on a
repository with many loose objects. The <code>gc</code> task writes unreachable
objects as loose objects to be cleaned up by a later step only if
they are not re-added to a pack-file; for this reason it is not
advisable to enable both the <code>loose-objects</code> and <code>gc</code> tasks at the
same time.</p>
</dd>
<dt class="hdlist1">incremental-repack</dt>
<dd>
<p>The <code>incremental-repack</code> job repacks the object directory
using the <code>multi-pack-index</code> feature. In order to prevent race
conditions with concurrent Git commands, it follows a two-step
process. First, it calls <code>git</code> <code>multi-pack-index</code> <code>expire</code> to delete
pack-files unreferenced by the <code>multi-pack-index</code> file. Second, it
calls <code>git</code> <code>multi-pack-index</code> <code>repack</code> to select several small
pack-files and repack them into a bigger one, and then update the
<code>multi-pack-index</code> entries that refer to the small pack-files to
refer to the new pack-file. This prepares those small pack-files
for deletion upon the next run of <code>git</code> <code>multi-pack-index</code> <code>expire</code>.
The selection of the small pack-files is such that the expected
size of the big pack-file is at least the batch size; see the
<code>--batch-size</code> option for the <code>repack</code> subcommand in
<a href="git-multi-pack-index.html">git-multi-pack-index(1)</a>. The default batch-size is zero,
which is a special case that attempts to repack all pack-files
into a single pack-file.</p>
</dd>
<dt class="hdlist1">pack-refs</dt>
<dd>
<p>The <code>pack-refs</code> task collects the loose reference files and
collects them into a single file. This speeds up operations that
need to iterate across many references. See <a href="git-pack-refs.html">git-pack-refs(1)</a>
for more information.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_options">OPTIONS</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">--auto</dt>
<dd>
<p>When combined with the <code>run</code> subcommand, run maintenance tasks
only if certain thresholds are met. For example, the <code>gc</code> task
runs when the number of loose objects exceeds the number stored
in the <code>gc.auto</code> config setting, or when the number of pack-files
exceeds the <code>gc.autoPackLimit</code> config setting. Not compatible with
the <code>--schedule</code> option.</p>
</dd>
<dt class="hdlist1">--schedule</dt>
<dd>
<p>When combined with the <code>run</code> subcommand, run maintenance tasks
only if certain time conditions are met, as specified by the
<code>maintenance.</code><em><task></em><code>.schedule</code> config value for each <em><task></em>.
This config value specifies a number of seconds since the last
time that task ran, according to the <code>maintenance.</code><em><task></em><code>.lastRun</code>
config value. The tasks that are tested are those provided by
the <code>--task=</code><em><task></em> option(s) or those with
<code>maintenance.</code><em><task></em><code>.enabled</code> set to true.</p>
</dd>
<dt class="hdlist1">--quiet</dt>
<dd>
<p>Do not report progress or other information over <code>stderr</code>.</p>
</dd>
<dt class="hdlist1">--task=<task></dt>
<dd>
<p>If this option is specified one or more times, then only run the
specified tasks in the specified order. If no <code>--task=</code><em><task></em>
arguments are specified, then only the tasks with
<code>maintenance.</code><em><task></em><code>.enabled</code> configured as <code>true</code> are considered.
See the <em>TASKS</em> section for the list of accepted <em><task></em> values.</p>
</dd>
<dt class="hdlist1">--scheduler=auto|crontab|systemd-timer|launchctl|schtasks</dt>
<dd>
<p>When combined with the <code>start</code> subcommand, specify the scheduler
for running the hourly, daily and weekly executions of
<code>git</code> <code>maintenance</code> <code>run</code>.
Possible values for <em><scheduler></em> are <code>auto</code>, <code>crontab</code>
(POSIX), <code>systemd-timer</code> (Linux), <code>launchctl</code> (macOS), and
<code>schtasks</code> (Windows). When <code>auto</code> is specified, the
appropriate platform-specific scheduler is used; on Linux,
<code>systemd-timer</code> is used if available, otherwise
<code>crontab</code>. Default is <code>auto</code>.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_troubleshooting">TROUBLESHOOTING</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The <code>git</code> <code>maintenance</code> command is designed to simplify the repository
maintenance patterns while minimizing user wait time during Git commands.
A variety of configuration options are available to allow customizing this
process. The default maintenance options focus on operations that complete
quickly, even on large repositories.</p>
</div>
<div class="paragraph">
<p>Users may find some cases where scheduled maintenance tasks do not run as
frequently as intended. Each <code>git</code> <code>maintenance</code> <code>run</code> command takes a lock on
the repository’s object database, and this prevents other concurrent
<code>git</code> <code>maintenance</code> <code>run</code> commands from running on the same repository. Without
this safeguard, competing processes could leave the repository in an
unpredictable state.</p>
</div>
<div class="paragraph">
<p>The background maintenance schedule runs <code>git</code> <code>maintenance</code> <code>run</code> processes
on an hourly basis. Each run executes the "hourly" tasks. At midnight,
that process also executes the "daily" tasks. At midnight on the first day
of the week, that process also executes the "weekly" tasks. A single
process iterates over each registered repository, performing the scheduled
tasks for that frequency. The processes are scheduled to a random minute of
the hour per client to spread out the load that multiple clients might
generate (e.g. from prefetching). Depending on the number of registered
repositories and their sizes, this process may take longer than an hour.
In this case, multiple <code>git</code> <code>maintenance</code> <code>run</code> commands may run on the same
repository at the same time, colliding on the object database lock. This
results in one of the two tasks not running.</p>
</div>
<div class="paragraph">
<p>If you find that some maintenance windows are taking longer than one hour
to complete, then consider reducing the complexity of your maintenance
tasks. For example, the <code>gc</code> task is much slower than the
<code>incremental-repack</code> task. However, this comes at a cost of a slightly
larger object database. Consider moving more expensive tasks to be run
less frequently.</p>
</div>
<div class="paragraph">
<p>Expert users may consider scheduling their own maintenance tasks using a
different schedule than is available through <code>git</code> <code>maintenance</code> <code>start</code> and
Git configuration options. These users should be aware of the object
database lock and how concurrent <code>git</code> <code>maintenance</code> <code>run</code> commands behave.
Further, the <code>git</code> <code>gc</code> command should not be combined with
<code>git</code> <code>maintenance</code> <code>run</code> commands. <code>git</code> <code>gc</code> modifies the object database
but does not take the lock in the same way as <code>git</code> <code>maintenance</code> <code>run</code>. If
possible, use <code>git</code> <code>maintenance</code> <code>run</code> <code>--task=gc</code> instead of <code>git</code> <code>gc</code>.</p>
</div>
<div class="paragraph">
<p>The following sections describe the mechanisms put in place to run
background maintenance by <code>git</code> <code>maintenance</code> <code>start</code> and how to customize
them.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_background_maintenance_on_posix_systems">BACKGROUND MAINTENANCE ON POSIX SYSTEMS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The standard mechanism for scheduling background tasks on POSIX systems
is cron(8). This tool executes commands based on a given schedule. The
current list of user-scheduled tasks can be found by running <code>crontab</code> <code>-l</code>.
The schedule written by <code>git</code> <code>maintenance</code> <code>start</code> is similar to this:</p>
</div>
<div class="listingblock">
<div class="content">
<pre># BEGIN GIT MAINTENANCE SCHEDULE
# The following schedule was created by Git
# Any edits made in this region might be
# replaced in the future by a Git command.
0 1-23 * * * "/<path>/git" --exec-path="/<path>" for-each-repo --config=maintenance.repo maintenance run --schedule=hourly
0 0 * * 1-6 "/<path>/git" --exec-path="/<path>" for-each-repo --config=maintenance.repo maintenance run --schedule=daily
0 0 * * 0 "/<path>/git" --exec-path="/<path>" for-each-repo --config=maintenance.repo maintenance run --schedule=weekly
# END GIT MAINTENANCE SCHEDULE</pre>
</div>
</div>
<div class="paragraph">
<p>The comments are used as a region to mark the schedule as written by Git.
Any modifications within this region will be completely deleted by
<code>git</code> <code>maintenance</code> <code>stop</code> or overwritten by <code>git</code> <code>maintenance</code> <code>start</code>.</p>
</div>
<div class="paragraph">
<p>The <code>crontab</code> entry specifies the full path of the <code>git</code> executable to
ensure that the executed <code>git</code> command is the same one with which
<code>git</code> <code>maintenance</code> <code>start</code> was issued independent of <code>PATH</code>. If the same user
runs <code>git</code> <code>maintenance</code> <code>start</code> with multiple Git executables, then only the
latest executable is used.</p>
</div>
<div class="paragraph">
<p>These commands use <code>git</code> <code>for-each-repo</code> <code>--config=maintenance.repo</code> to run
<code>git</code> <code>maintenance</code> <code>run</code> <code>--schedule=</code><em><frequency></em> on each repository listed in
the multi-valued <code>maintenance.repo</code> config option. These are typically
loaded from the user-specific global config. The <code>git</code> <code>maintenance</code> process
then determines which maintenance tasks are configured to run on each
repository with each <em><frequency></em> using the <code>maintenance.</code><em><task></em><code>.schedule</code>
config options. These values are loaded from the global or repository
config values.</p>
</div>
<div class="paragraph">
<p>If the config values are insufficient to achieve your desired background
maintenance schedule, then you can create your own schedule. If you run
<code>crontab</code> <code>-e</code>, then an editor will load with your user-specific <code>cron</code>
schedule. In that editor, you can add your own schedule lines. You could
start by adapting the default schedule listed earlier, or you could read
the crontab(5) documentation for advanced scheduling techniques. Please
do use the full path and <code>--exec-path</code> techniques from the default
schedule to ensure you are executing the correct binaries in your
schedule.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_background_maintenance_on_linux_systemd_systems">BACKGROUND MAINTENANCE ON LINUX SYSTEMD SYSTEMS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>While Linux supports <code>cron</code>, depending on the distribution, <code>cron</code> may
be an optional package not necessarily installed. On modern Linux
distributions, systemd timers are superseding it.</p>
</div>
<div class="paragraph">
<p>If user systemd timers are available, they will be used as a replacement
of <code>cron</code>.</p>
</div>
<div class="paragraph">
<p>In this case, <code>git</code> <code>maintenance</code> <code>start</code> will create user systemd timer units
and start the timers. The current list of user-scheduled tasks can be found
by running <code>systemctl</code> <code>--user</code> <code>list-timers</code>. The timers written by <code>git</code>
<code>maintenance</code> <code>start</code> are similar to this:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ systemctl --user list-timers
NEXT LEFT LAST PASSED UNIT ACTIVATES
Thu 2021-04-29 19:00:00 CEST 42min left Thu 2021-04-29 18:00:11 CEST 17min ago git-maintenance@hourly.timer git-maintenance@hourly.service
Fri 2021-04-30 00:00:00 CEST 5h 42min left Thu 2021-04-29 00:00:11 CEST 18h ago git-maintenance@daily.timer git-maintenance@daily.service
Mon 2021-05-03 00:00:00 CEST 3 days left Mon 2021-04-26 00:00:11 CEST 3 days ago git-maintenance@weekly.timer git-maintenance@weekly.service</pre>
</div>
</div>
<div class="paragraph">
<p>One timer is registered for each <code>--schedule=</code><em><frequency></em> option.</p>
</div>
<div class="paragraph">
<p>The definition of the systemd units can be inspected in the following files:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>~/.config/systemd/user/git-maintenance@.timer
~/.config/systemd/user/git-maintenance@.service
~/.config/systemd/user/timers.target.wants/git-maintenance@hourly.timer
~/.config/systemd/user/timers.target.wants/git-maintenance@daily.timer
~/.config/systemd/user/timers.target.wants/git-maintenance@weekly.timer</pre>
</div>
</div>
<div class="paragraph">
<p><code>git</code> <code>maintenance</code> <code>start</code> will overwrite these files and start the timer
again with <code>systemctl</code> <code>--user</code>, so any customization should be done by
creating a drop-in file, i.e. a .<code>conf</code> suffixed file in the
<code>~/.config/systemd/user/git-maintenance@.service.d</code> directory.</p>
</div>
<div class="paragraph">
<p><code>git</code> <code>maintenance</code> <code>stop</code> will stop the user systemd timers and delete
the above mentioned files.</p>
</div>
<div class="paragraph">
<p>For more details, see <code>systemd.timer</code>(<code>5</code>).</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_background_maintenance_on_macos_systems">BACKGROUND MAINTENANCE ON MACOS SYSTEMS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>While macOS technically supports <code>cron</code>, using <code>crontab</code> <code>-e</code> requires
elevated privileges and the executed process does not have a full user
context. Without a full user context, Git and its credential helpers
cannot access stored credentials, so some maintenance tasks are not
functional.</p>
</div>
<div class="paragraph">
<p>Instead, <code>git</code> <code>maintenance</code> <code>start</code> interacts with the <code>launchctl</code> tool,
which is the recommended way to schedule timed jobs in macOS. Scheduling
maintenance through <code>git</code> <code>maintenance</code> (<code>start</code>|<code>stop</code>) requires some
<code>launchctl</code> features available only in macOS 10.11 or later.</p>
</div>
<div class="paragraph">
<p>Your user-specific scheduled tasks are stored as XML-formatted .<code>plist</code>
files in <code>~/Library/LaunchAgents/</code>. You can see the currently-registered
tasks using the following command:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ ls ~/Library/LaunchAgents/org.git-scm.git*
org.git-scm.git.daily.plist
org.git-scm.git.hourly.plist
org.git-scm.git.weekly.plist</pre>
</div>
</div>
<div class="paragraph">
<p>One task is registered for each <code>--schedule=</code><em><frequency></em> option. To
inspect how the XML format describes each schedule, open one of these
.<code>plist</code> files in an editor and inspect the <em><array></em> element following
the <em><key></em><code>StartCalendarInterval</code></key> element.</p>
</div>
<div class="paragraph">
<p><code>git</code> <code>maintenance</code> <code>start</code> will overwrite these files and register the
tasks again with <code>launchctl</code>, so any customizations should be done by
creating your own .<code>plist</code> files with distinct names. Similarly, the
<code>git</code> <code>maintenance</code> <code>stop</code> command will unregister the tasks with <code>launchctl</code>
and delete the .<code>plist</code> files.</p>
</div>
<div class="paragraph">
<p>To create more advanced customizations to your background tasks, see
launchctl.plist(5) for more information.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_background_maintenance_on_windows_systems">BACKGROUND MAINTENANCE ON WINDOWS SYSTEMS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Windows does not support <code>cron</code> and instead has its own system for
scheduling background tasks. The <code>git</code> <code>maintenance</code> <code>start</code> command uses
the <code>schtasks</code> command to submit tasks to this system. You can inspect
all background tasks using the Task Scheduler application. The tasks
added by Git have names of the form <code>Git</code> <code>Maintenance</code> (<em><frequency></em>).
The Task Scheduler GUI has ways to inspect these tasks, but you can also
export the tasks to XML files and view the details there.</p>
</div>
<div class="paragraph">
<p>Note that since Git is a console application, these background tasks
create a console window visible to the current user. This can be changed
manually by selecting the "Run whether user is logged in or not" option
in Task Scheduler. This change requires a password input, which is why
<code>git</code> <code>maintenance</code> <code>start</code> does not select it by default.</p>
</div>
<div class="paragraph">
<p>If you want to customize the background tasks, please rename the tasks
so future calls to <code>git</code> <code>maintenance</code> (<code>start</code>|<code>stop</code>) do not overwrite your
custom tasks.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_configuration">CONFIGURATION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Everything below this line in this section is selectively included
from the <a href="git-config.html">git-config(1)</a> documentation. The content is the same
as what’s found there:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">maintenance.auto</dt>
<dd>
<p>This boolean config option controls whether some commands run
<code>git</code> <code>maintenance</code> <code>run</code> <code>--auto</code> after doing their normal work. Defaults
to true.</p>
</dd>
<dt class="hdlist1">maintenance.autoDetach</dt>
<dd>
<p>Many Git commands trigger automatic maintenance after they have
written data into the repository. This boolean config option
controls whether this automatic maintenance shall happen in the
foreground or whether the maintenance process shall detach and
continue to run in the background.</p>
<div class="paragraph">
<p>If unset, the value of <code>gc.autoDetach</code> is used as a fallback. Defaults
to true if both are unset, meaning that the maintenance process will
detach.</p>
</div>
</dd>
<dt class="hdlist1">maintenance.strategy</dt>
<dd>
<p>This string config option provides a way to specify one of a few
recommended schedules for background maintenance. This only affects
which tasks are run during <code>git</code> <code>maintenance</code> <code>run</code> <code>--schedule=X</code>
commands, provided no <code>--task=</code><em><task></em> arguments are provided.
Further, if a <code>maintenance.</code><em><task></em><code>.schedule</code> config value is set,
then that value is used instead of the one provided by
<code>maintenance.strategy</code>. The possible strategy strings are:</p>
<div class="ulist">
<ul>
<li>
<p><code>none</code>: This default setting implies no tasks are run at any schedule.</p>
</li>
<li>
<p><code>incremental</code>: This setting optimizes for performing small maintenance
activities that do not delete any data. This does not schedule the <code>gc</code>
task, but runs the <code>prefetch</code> and <code>commit-graph</code> tasks hourly, the
<code>loose-objects</code> and <code>incremental-repack</code> tasks daily, and the <code>pack-refs</code>