blob: fb9460a8f005ebe668b56af94c3395b05a332f3d [file] [log] [blame]
Junio C Hamano85151f32018-04-10 00:52:261<?xml version="1.0" encoding="UTF-8"?>
Junio C Hamano52299462006-12-28 00:59:382<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
3 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
4<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
5<head>
Junio C Hamano9d971152012-12-19 00:43:116<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
Junio C Hamanoa85030a2022-07-27 16:48:217<meta name="generator" content="AsciiDoc 10.2.0" />
Junio C Hamano97bcb482010-11-25 03:16:078<title>git-gc(1)</title>
Junio C Hamano52299462006-12-28 00:59:389<style type="text/css">
Junio C Hamano9d971152012-12-19 00:43:1110/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
11
12/* Default font. */
13body {
14 font-family: Georgia,serif;
15}
16
17/* Title font. */
18h1, h2, h3, h4, h5, h6,
19div.title, caption.title,
20thead, p.table.header,
21#toctitle,
22#author, #revnumber, #revdate, #revremark,
23#footer {
24 font-family: Arial,Helvetica,sans-serif;
Junio C Hamano52299462006-12-28 00:59:3825}
26
27body {
28 margin: 1em 5% 1em 5%;
29}
30
Junio C Hamanoba4b9282008-07-06 05:20:3131a {
32 color: blue;
33 text-decoration: underline;
34}
35a:visited {
36 color: fuchsia;
37}
Junio C Hamano52299462006-12-28 00:59:3838
39em {
40 font-style: italic;
Junio C Hamano97bcb482010-11-25 03:16:0741 color: navy;
Junio C Hamano52299462006-12-28 00:59:3842}
43
44strong {
45 font-weight: bold;
Junio C Hamano97bcb482010-11-25 03:16:0746 color: #083194;
Junio C Hamano52299462006-12-28 00:59:3847}
48
Junio C Hamano52299462006-12-28 00:59:3849h1, h2, h3, h4, h5, h6 {
50 color: #527bbd;
Junio C Hamano52299462006-12-28 00:59:3851 margin-top: 1.2em;
52 margin-bottom: 0.5em;
53 line-height: 1.3;
54}
55
Junio C Hamanoba4b9282008-07-06 05:20:3156h1, h2, h3 {
Junio C Hamano52299462006-12-28 00:59:3857 border-bottom: 2px solid silver;
58}
59h2 {
Junio C Hamano52299462006-12-28 00:59:3860 padding-top: 0.5em;
61}
Junio C Hamanoba4b9282008-07-06 05:20:3162h3 {
63 float: left;
64}
65h3 + * {
66 clear: left;
67}
Junio C Hamano9d971152012-12-19 00:43:1168h5 {
69 font-size: 1.0em;
70}
Junio C Hamano52299462006-12-28 00:59:3871
72div.sectionbody {
Junio C Hamano52299462006-12-28 00:59:3873 margin-left: 0;
74}
75
76hr {
77 border: 1px solid silver;
78}
79
80p {
81 margin-top: 0.5em;
82 margin-bottom: 0.5em;
83}
84
Junio C Hamano97bcb482010-11-25 03:16:0785ul, ol, li > p {
86 margin-top: 0;
87}
Junio C Hamano9d971152012-12-19 00:43:1188ul > li { color: #aaa; }
89ul > li > * { color: black; }
Junio C Hamano97bcb482010-11-25 03:16:0790
Junio C Hamanoc14e6ad2014-10-31 20:25:5391.monospaced, code, pre {
92 font-family: "Courier New", Courier, monospace;
93 font-size: inherit;
94 color: navy;
Junio C Hamano52299462006-12-28 00:59:3895 padding: 0;
96 margin: 0;
97}
Junio C Hamanoc14e6ad2014-10-31 20:25:5398pre {
99 white-space: pre-wrap;
100}
Junio C Hamano52299462006-12-28 00:59:38101
Junio C Hamano9d971152012-12-19 00:43:11102#author {
Junio C Hamano52299462006-12-28 00:59:38103 color: #527bbd;
Junio C Hamano52299462006-12-28 00:59:38104 font-weight: bold;
Junio C Hamanoba4b9282008-07-06 05:20:31105 font-size: 1.1em;
Junio C Hamano52299462006-12-28 00:59:38106}
Junio C Hamano9d971152012-12-19 00:43:11107#email {
Junio C Hamano52299462006-12-28 00:59:38108}
Junio C Hamano9d971152012-12-19 00:43:11109#revnumber, #revdate, #revremark {
Junio C Hamano52299462006-12-28 00:59:38110}
111
Junio C Hamano9d971152012-12-19 00:43:11112#footer {
Junio C Hamano52299462006-12-28 00:59:38113 font-size: small;
114 border-top: 2px solid silver;
115 padding-top: 0.5em;
116 margin-top: 4.0em;
117}
Junio C Hamano9d971152012-12-19 00:43:11118#footer-text {
Junio C Hamano52299462006-12-28 00:59:38119 float: left;
120 padding-bottom: 0.5em;
121}
Junio C Hamano9d971152012-12-19 00:43:11122#footer-badges {
Junio C Hamano52299462006-12-28 00:59:38123 float: right;
124 padding-bottom: 0.5em;
125}
126
Junio C Hamano9d971152012-12-19 00:43:11127#preamble {
Junio C Hamano97bcb482010-11-25 03:16:07128 margin-top: 1.5em;
129 margin-bottom: 1.5em;
130}
Junio C Hamano9d971152012-12-19 00:43:11131div.imageblock, div.exampleblock, div.verseblock,
Junio C Hamano52299462006-12-28 00:59:38132div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
133div.admonitionblock {
Junio C Hamano7bd050f2011-09-22 06:32:22134 margin-top: 1.0em;
Junio C Hamano52299462006-12-28 00:59:38135 margin-bottom: 1.5em;
136}
137div.admonitionblock {
Junio C Hamano7bd050f2011-09-22 06:32:22138 margin-top: 2.0em;
139 margin-bottom: 2.0em;
140 margin-right: 10%;
141 color: #606060;
Junio C Hamano52299462006-12-28 00:59:38142}
143
144div.content { /* Block element content. */
145 padding: 0;
146}
147
148/* Block element titles. */
149div.title, caption.title {
Junio C Hamano97bcb482010-11-25 03:16:07150 color: #527bbd;
Junio C Hamano52299462006-12-28 00:59:38151 font-weight: bold;
152 text-align: left;
153 margin-top: 1.0em;
154 margin-bottom: 0.5em;
155}
156div.title + * {
157 margin-top: 0;
158}
159
160td div.title:first-child {
161 margin-top: 0.0em;
162}
163div.content div.title:first-child {
164 margin-top: 0.0em;
165}
166div.content + div.title {
167 margin-top: 0.0em;
168}
169
170div.sidebarblock > div.content {
171 background: #ffffee;
Junio C Hamano9d971152012-12-19 00:43:11172 border: 1px solid #dddddd;
173 border-left: 4px solid #f0f0f0;
Junio C Hamano52299462006-12-28 00:59:38174 padding: 0.5em;
175}
176
177div.listingblock > div.content {
Junio C Hamano9d971152012-12-19 00:43:11178 border: 1px solid #dddddd;
179 border-left: 5px solid #f0f0f0;
180 background: #f8f8f8;
Junio C Hamano52299462006-12-28 00:59:38181 padding: 0.5em;
182}
183
Junio C Hamano7bd050f2011-09-22 06:32:22184div.quoteblock, div.verseblock {
185 padding-left: 1.0em;
186 margin-left: 1.0em;
Junio C Hamano97bcb482010-11-25 03:16:07187 margin-right: 10%;
Junio C Hamano9d971152012-12-19 00:43:11188 border-left: 5px solid #f0f0f0;
189 color: #888;
Junio C Hamano52299462006-12-28 00:59:38190}
Junio C Hamano7bd050f2011-09-22 06:32:22191
Junio C Hamano97bcb482010-11-25 03:16:07192div.quoteblock > div.attribution {
193 padding-top: 0.5em;
Junio C Hamano52299462006-12-28 00:59:38194 text-align: right;
195}
Junio C Hamano97bcb482010-11-25 03:16:07196
Junio C Hamano9d971152012-12-19 00:43:11197div.verseblock > pre.content {
198 font-family: inherit;
199 font-size: inherit;
Junio C Hamano97bcb482010-11-25 03:16:07200}
201div.verseblock > div.attribution {
202 padding-top: 0.75em;
203 text-align: left;
204}
205/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
Junio C Hamanoba4b9282008-07-06 05:20:31206div.verseblock + div.attribution {
207 text-align: left;
208}
Junio C Hamano52299462006-12-28 00:59:38209
210div.admonitionblock .icon {
211 vertical-align: top;
212 font-size: 1.1em;
213 font-weight: bold;
214 text-decoration: underline;
215 color: #527bbd;
216 padding-right: 0.5em;
217}
218div.admonitionblock td.content {
219 padding-left: 0.5em;
Junio C Hamano7bd050f2011-09-22 06:32:22220 border-left: 3px solid #dddddd;
Junio C Hamano52299462006-12-28 00:59:38221}
222
223div.exampleblock > div.content {
Junio C Hamano7bd050f2011-09-22 06:32:22224 border-left: 3px solid #dddddd;
225 padding-left: 0.5em;
Junio C Hamano52299462006-12-28 00:59:38226}
227
Junio C Hamano52299462006-12-28 00:59:38228div.imageblock div.content { padding-left: 0; }
Junio C Hamanoc14e6ad2014-10-31 20:25:53229span.image img { border-style: none; vertical-align: text-bottom; }
Junio C Hamano97bcb482010-11-25 03:16:07230a.image:visited { color: white; }
Junio C Hamano52299462006-12-28 00:59:38231
232dl {
233 margin-top: 0.8em;
234 margin-bottom: 0.8em;
235}
236dt {
237 margin-top: 0.5em;
238 margin-bottom: 0;
Junio C Hamano97bcb482010-11-25 03:16:07239 font-style: normal;
240 color: navy;
Junio C Hamano52299462006-12-28 00:59:38241}
242dd > *:first-child {
Junio C Hamano97bcb482010-11-25 03:16:07243 margin-top: 0.1em;
Junio C Hamano52299462006-12-28 00:59:38244}
245
246ul, ol {
247 list-style-position: outside;
248}
Junio C Hamano97bcb482010-11-25 03:16:07249ol.arabic {
250 list-style-type: decimal;
251}
252ol.loweralpha {
Junio C Hamano52299462006-12-28 00:59:38253 list-style-type: lower-alpha;
254}
Junio C Hamano97bcb482010-11-25 03:16:07255ol.upperalpha {
256 list-style-type: upper-alpha;
257}
258ol.lowerroman {
259 list-style-type: lower-roman;
260}
261ol.upperroman {
262 list-style-type: upper-roman;
263}
264
265div.compact ul, div.compact ol,
266div.compact p, div.compact p,
267div.compact div, div.compact div {
268 margin-top: 0.1em;
269 margin-bottom: 0.1em;
270}
Junio C Hamano52299462006-12-28 00:59:38271
Junio C Hamano52299462006-12-28 00:59:38272tfoot {
273 font-weight: bold;
274}
Junio C Hamano97bcb482010-11-25 03:16:07275td > div.verse {
276 white-space: pre;
277}
Junio C Hamano97bcb482010-11-25 03:16:07278
279div.hdlist {
Junio C Hamano52299462006-12-28 00:59:38280 margin-top: 0.8em;
281 margin-bottom: 0.8em;
282}
Junio C Hamano97bcb482010-11-25 03:16:07283div.hdlist tr {
284 padding-bottom: 15px;
Junio C Hamanoba4b9282008-07-06 05:20:31285}
Junio C Hamano97bcb482010-11-25 03:16:07286dt.hdlist1.strong, td.hdlist1.strong {
287 font-weight: bold;
288}
289td.hdlist1 {
Junio C Hamano52299462006-12-28 00:59:38290 vertical-align: top;
Junio C Hamano97bcb482010-11-25 03:16:07291 font-style: normal;
Junio C Hamano52299462006-12-28 00:59:38292 padding-right: 0.8em;
Junio C Hamano97bcb482010-11-25 03:16:07293 color: navy;
Junio C Hamano52299462006-12-28 00:59:38294}
Junio C Hamano97bcb482010-11-25 03:16:07295td.hdlist2 {
Junio C Hamano52299462006-12-28 00:59:38296 vertical-align: top;
297}
Junio C Hamano97bcb482010-11-25 03:16:07298div.hdlist.compact tr {
299 margin: 0;
300 padding-bottom: 0;
301}
302
303.comment {
304 background: yellow;
305}
Junio C Hamano52299462006-12-28 00:59:38306
Junio C Hamano7bd050f2011-09-22 06:32:22307.footnote, .footnoteref {
308 font-size: 0.8em;
309}
310
311span.footnote, span.footnoteref {
312 vertical-align: super;
313}
314
315#footnotes {
316 margin: 20px 0 20px 0;
317 padding: 7px 0 0 0;
318}
319
320#footnotes div.footnote {
321 margin: 0 0 5px 0;
322}
323
324#footnotes hr {
325 border: none;
326 border-top: 1px solid silver;
327 height: 1px;
328 text-align: left;
329 margin-left: 0;
330 width: 20%;
331 min-width: 100px;
332}
333
Junio C Hamano9d971152012-12-19 00:43:11334div.colist td {
335 padding-right: 0.5em;
336 padding-bottom: 0.3em;
337 vertical-align: top;
338}
339div.colist td img {
340 margin-top: 0.3em;
Junio C Hamano52299462006-12-28 00:59:38341}
Junio C Hamanoba4b9282008-07-06 05:20:31342
Junio C Hamano9d971152012-12-19 00:43:11343@media print {
344 #footer-badges { display: none; }
345}
346
347#toc {
Junio C Hamano7bd050f2011-09-22 06:32:22348 margin-bottom: 2.5em;
349}
350
Junio C Hamano9d971152012-12-19 00:43:11351#toctitle {
Junio C Hamanoba4b9282008-07-06 05:20:31352 color: #527bbd;
Junio C Hamanoba4b9282008-07-06 05:20:31353 font-size: 1.1em;
354 font-weight: bold;
355 margin-top: 1.0em;
356 margin-bottom: 0.1em;
357}
358
Junio C Hamanoc14e6ad2014-10-31 20:25:53359div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
Junio C Hamanoba4b9282008-07-06 05:20:31360 margin-top: 0;
361 margin-bottom: 0;
362}
363div.toclevel2 {
364 margin-left: 2em;
365 font-size: 0.9em;
366}
367div.toclevel3 {
368 margin-left: 4em;
369 font-size: 0.9em;
370}
371div.toclevel4 {
372 margin-left: 6em;
373 font-size: 0.9em;
374}
Junio C Hamano9d971152012-12-19 00:43:11375
376span.aqua { color: aqua; }
377span.black { color: black; }
378span.blue { color: blue; }
379span.fuchsia { color: fuchsia; }
380span.gray { color: gray; }
381span.green { color: green; }
382span.lime { color: lime; }
383span.maroon { color: maroon; }
384span.navy { color: navy; }
385span.olive { color: olive; }
386span.purple { color: purple; }
387span.red { color: red; }
388span.silver { color: silver; }
389span.teal { color: teal; }
390span.white { color: white; }
391span.yellow { color: yellow; }
392
393span.aqua-background { background: aqua; }
394span.black-background { background: black; }
395span.blue-background { background: blue; }
396span.fuchsia-background { background: fuchsia; }
397span.gray-background { background: gray; }
398span.green-background { background: green; }
399span.lime-background { background: lime; }
400span.maroon-background { background: maroon; }
401span.navy-background { background: navy; }
402span.olive-background { background: olive; }
403span.purple-background { background: purple; }
404span.red-background { background: red; }
405span.silver-background { background: silver; }
406span.teal-background { background: teal; }
407span.white-background { background: white; }
408span.yellow-background { background: yellow; }
409
410span.big { font-size: 2em; }
411span.small { font-size: 0.6em; }
412
413span.underline { text-decoration: underline; }
414span.overline { text-decoration: overline; }
415span.line-through { text-decoration: line-through; }
416
Junio C Hamanoc14e6ad2014-10-31 20:25:53417div.unbreakable { page-break-inside: avoid; }
418
Junio C Hamano9d971152012-12-19 00:43:11419
420/*
421 * xhtml11 specific
422 *
423 * */
424
425div.tableblock {
426 margin-top: 1.0em;
427 margin-bottom: 1.5em;
428}
429div.tableblock > table {
430 border: 3px solid #527bbd;
431}
432thead, p.table.header {
433 font-weight: bold;
434 color: #527bbd;
435}
436p.table {
437 margin-top: 0;
438}
Junio C Hamano725b0da2020-01-22 22:02:40439/* Because the table frame attribute is overridden by CSS in most browsers. */
Junio C Hamano9d971152012-12-19 00:43:11440div.tableblock > table[frame="void"] {
441 border-style: none;
442}
443div.tableblock > table[frame="hsides"] {
444 border-left-style: none;
445 border-right-style: none;
446}
447div.tableblock > table[frame="vsides"] {
448 border-top-style: none;
449 border-bottom-style: none;
450}
451
452
453/*
454 * html5 specific
455 *
456 * */
457
458table.tableblock {
459 margin-top: 1.0em;
460 margin-bottom: 1.5em;
461}
462thead, p.tableblock.header {
463 font-weight: bold;
464 color: #527bbd;
465}
466p.tableblock {
467 margin-top: 0;
468}
469table.tableblock {
470 border-width: 3px;
471 border-spacing: 0px;
472 border-style: solid;
473 border-color: #527bbd;
474 border-collapse: collapse;
475}
476th.tableblock, td.tableblock {
477 border-width: 1px;
478 padding: 4px;
479 border-style: solid;
480 border-color: #527bbd;
481}
482
483table.tableblock.frame-topbot {
484 border-left-style: hidden;
485 border-right-style: hidden;
486}
487table.tableblock.frame-sides {
488 border-top-style: hidden;
489 border-bottom-style: hidden;
490}
491table.tableblock.frame-none {
492 border-style: hidden;
493}
494
495th.tableblock.halign-left, td.tableblock.halign-left {
496 text-align: left;
497}
498th.tableblock.halign-center, td.tableblock.halign-center {
499 text-align: center;
500}
501th.tableblock.halign-right, td.tableblock.halign-right {
502 text-align: right;
503}
504
505th.tableblock.valign-top, td.tableblock.valign-top {
506 vertical-align: top;
507}
508th.tableblock.valign-middle, td.tableblock.valign-middle {
509 vertical-align: middle;
510}
511th.tableblock.valign-bottom, td.tableblock.valign-bottom {
512 vertical-align: bottom;
513}
514
515
516/*
517 * manpage specific
518 *
519 * */
520
521body.manpage h1 {
Junio C Hamano97bcb482010-11-25 03:16:07522 padding-top: 0.5em;
523 padding-bottom: 0.5em;
524 border-top: 2px solid silver;
525 border-bottom: 2px solid silver;
526}
Junio C Hamano9d971152012-12-19 00:43:11527body.manpage h2 {
Junio C Hamano97bcb482010-11-25 03:16:07528 border-style: none;
529}
Junio C Hamano9d971152012-12-19 00:43:11530body.manpage div.sectionbody {
531 margin-left: 3em;
Junio C Hamano97bcb482010-11-25 03:16:07532}
533
534@media print {
Junio C Hamano9d971152012-12-19 00:43:11535 body.manpage div#toc { display: none; }
Junio C Hamano97bcb482010-11-25 03:16:07536}
Junio C Hamanoc14e6ad2014-10-31 20:25:53537
538
Junio C Hamano52299462006-12-28 00:59:38539</style>
Junio C Hamano7bd050f2011-09-22 06:32:22540<script type="text/javascript">
541/*<![CDATA[*/
Junio C Hamano2b153182021-12-15 21:00:31542var asciidoc = { // Namespace.
543
544/////////////////////////////////////////////////////////////////////
545// Table Of Contents generator
546/////////////////////////////////////////////////////////////////////
547
548/* Author: Mihai Bazon, September 2002
549 * http://students.infoiasi.ro/~mishoo
550 *
551 * Table Of Content generator
552 * Version: 0.4
553 *
554 * Feel free to use this script under the terms of the GNU General Public
555 * License, as long as you do not remove or alter this notice.
556 */
557
558 /* modified by Troy D. Hanson, September 2006. License: GPL */
559 /* modified by Stuart Rackham, 2006, 2009. License: GPL */
560
561// toclevels = 1..4.
562toc: function (toclevels) {
563
564 function getText(el) {
565 var text = "";
566 for (var i = el.firstChild; i != null; i = i.nextSibling) {
567 if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
568 text += i.data;
569 else if (i.firstChild != null)
570 text += getText(i);
571 }
572 return text;
573 }
574
575 function TocEntry(el, text, toclevel) {
576 this.element = el;
577 this.text = text;
578 this.toclevel = toclevel;
579 }
580
581 function tocEntries(el, toclevels) {
582 var result = new Array;
583 var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
584 // Function that scans the DOM tree for header elements (the DOM2
585 // nodeIterator API would be a better technique but not supported by all
586 // browsers).
587 var iterate = function (el) {
588 for (var i = el.firstChild; i != null; i = i.nextSibling) {
589 if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
590 var mo = re.exec(i.tagName);
591 if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
592 result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
593 }
594 iterate(i);
595 }
596 }
597 }
598 iterate(el);
599 return result;
600 }
601
602 var toc = document.getElementById("toc");
603 if (!toc) {
604 return;
605 }
606
607 // Delete existing TOC entries in case we're reloading the TOC.
608 var tocEntriesToRemove = [];
609 var i;
610 for (i = 0; i < toc.childNodes.length; i++) {
611 var entry = toc.childNodes[i];
612 if (entry.nodeName.toLowerCase() == 'div'
613 && entry.getAttribute("class")
614 && entry.getAttribute("class").match(/^toclevel/))
615 tocEntriesToRemove.push(entry);
616 }
617 for (i = 0; i < tocEntriesToRemove.length; i++) {
618 toc.removeChild(tocEntriesToRemove[i]);
619 }
620
621 // Rebuild TOC entries.
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Junio C Hamano52299462006-12-28 00:59:38734</head>
Junio C Hamano9d971152012-12-19 00:43:11735<body class="manpage">
Junio C Hamano52299462006-12-28 00:59:38736<div id="header">
737<h1>
738git-gc(1) Manual Page
739</h1>
740<h2>NAME</h2>
741<div class="sectionbody">
742<p>git-gc -
743 Cleanup unnecessary files and optimize the local repository
744</p>
745</div>
746</div>
Junio C Hamano7bd050f2011-09-22 06:32:22747<div id="content">
Junio C Hamano9d971152012-12-19 00:43:11748<div class="sect1">
Junio C Hamano97bcb482010-11-25 03:16:07749<h2 id="_synopsis">SYNOPSIS</h2>
Junio C Hamano52299462006-12-28 00:59:38750<div class="sectionbody">
Junio C Hamano15567bc2011-07-23 00:51:59751<div class="verseblock">
Junio C Hamanob9d9d902018-05-23 07:07:42752<pre class="content"><em>git gc</em> [--aggressive] [--auto] [--quiet] [--prune=&lt;date&gt; | --no-prune] [--force] [--keep-largest-pack]</pre>
Junio C Hamano9d971152012-12-19 00:43:11753<div class="attribution">
Junio C Hamano15567bc2011-07-23 00:51:59754</div></div>
Junio C Hamano52299462006-12-28 00:59:38755</div>
Junio C Hamano9d971152012-12-19 00:43:11756</div>
757<div class="sect1">
Junio C Hamanoba4b9282008-07-06 05:20:31758<h2 id="_description">DESCRIPTION</h2>
Junio C Hamano52299462006-12-28 00:59:38759<div class="sectionbody">
Junio C Hamano97bcb482010-11-25 03:16:07760<div class="paragraph"><p>Runs a number of housekeeping tasks within the current repository,
Junio C Hamano52299462006-12-28 00:59:38761such as compressing file revisions (to reduce disk space and increase
Junio C Hamano85151f32018-04-10 00:52:26762performance), removing unreachable objects which may have been
763created from prior invocations of <em>git add</em>, packing refs, pruning
Junio C Hamanoa4df8ed2018-10-26 06:37:13764reflog, rerere metadata or stale working trees. May also update ancillary
765indexes such as the commit-graph.</p></div>
Junio C Hamano2ba14712019-04-25 10:12:27766<div class="paragraph"><p>When common porcelain operations that create objects are run, they
767will check whether the repository has grown substantially since the
768last maintenance, and if so run <code>git gc</code> automatically. See <code>gc.auto</code>
769below for how to disable this behavior.</p></div>
770<div class="paragraph"><p>Running <code>git gc</code> manually should only be needed when adding objects to
771a repository without regularly running such porcelain commands, to do
772a one-off repository optimization, or e.g. to clean up a suboptimal
773mass-import. See the "PACKFILE OPTIMIZATION" section in
774<a href="git-fast-import.html">git-fast-import(1)</a> for more details on the import case.</p></div>
Junio C Hamano52299462006-12-28 00:59:38775</div>
Junio C Hamano9d971152012-12-19 00:43:11776</div>
777<div class="sect1">
Junio C Hamanoba4b9282008-07-06 05:20:31778<h2 id="_options">OPTIONS</h2>
Junio C Hamanof65d9282007-01-22 09:00:13779<div class="sectionbody">
Junio C Hamano97bcb482010-11-25 03:16:07780<div class="dlist"><dl>
781<dt class="hdlist1">
Junio C Hamanof2ce2972007-05-20 19:12:09782--aggressive
783</dt>
784<dd>
785<p>
Junio C Hamano1aa40d22010-01-21 17:46:43786 Usually <em>git gc</em> runs very quickly while providing good disk
Junio C Hamano679d22d2007-06-02 21:13:44787 space utilization and performance. This option will cause
Junio C Hamano1aa40d22010-01-21 17:46:43788 <em>git gc</em> to more aggressively optimize the repository at the expense
Junio C Hamanof2ce2972007-05-20 19:12:09789 of taking much more time. The effects of this optimization are
Junio C Hamano2ba14712019-04-25 10:12:27790 mostly persistent. See the "AGGRESSIVE" section below for details.
Junio C Hamanof2ce2972007-05-20 19:12:09791</p>
792</dd>
Junio C Hamano97bcb482010-11-25 03:16:07793<dt class="hdlist1">
Junio C Hamano1b50ce92007-10-03 12:05:53794--auto
795</dt>
796<dd>
797<p>
Junio C Hamano1aa40d22010-01-21 17:46:43798 With this option, <em>git gc</em> checks whether any housekeeping is
Junio C Hamano764a6672007-10-23 01:23:31799 required; if not, it exits without performing any work.
Junio C Hamano1b50ce92007-10-03 12:05:53800</p>
Junio C Hamano2ba14712019-04-25 10:12:27801<div class="paragraph"><p>See the <code>gc.auto</code> option in the "CONFIGURATION" section below for how
802this heuristic works.</p></div>
803<div class="paragraph"><p>Once housekeeping is triggered by exceeding the limits of
804configuration options such as <code>gc.auto</code> and <code>gc.autoPackLimit</code>, all
Junio C Hamano85151f32018-04-10 00:52:26805other housekeeping tasks (e.g. rerere, working trees, reflog&#8230;) will
806be performed as well.</p></div>
Junio C Hamano1b50ce92007-10-03 12:05:53807</dd>
Junio C Hamano97bcb482010-11-25 03:16:07808<dt class="hdlist1">
Junio C Hamano0a4482a2023-04-28 23:29:01809--[no-]cruft
Junio C Hamanoc926f622022-06-03 22:26:23810</dt>
811<dd>
812<p>
813 When expiring unreachable objects, pack them separately into a
Junio C Hamano0a4482a2023-04-28 23:29:01814 cruft pack instead of storing them as loose objects. <code>--cruft</code>
815 is on by default.
Junio C Hamanoc926f622022-06-03 22:26:23816</p>
817</dd>
818<dt class="hdlist1">
Junio C Hamano8bc410e2009-02-15 10:38:19819--prune=&lt;date&gt;
820</dt>
821<dd>
822<p>
823 Prune loose objects older than date (default is 2 weeks ago,
Junio C Hamanoc14e6ad2014-10-31 20:25:53824 overridable by the config variable <code>gc.pruneExpire</code>).
Junio C Hamanodecc7312019-03-11 09:02:54825 --prune=now prunes loose objects regardless of their age and
Junio C Hamano56ace3d2017-01-10 23:43:41826 increases the risk of corruption if another process is writing to
827 the repository concurrently; see "NOTES" below. --prune is on by
828 default.
Junio C Hamano8bc410e2009-02-15 10:38:19829</p>
830</dd>
Junio C Hamano97bcb482010-11-25 03:16:07831<dt class="hdlist1">
Junio C Hamano8bc410e2009-02-15 10:38:19832--no-prune
833</dt>
834<dd>
835<p>
836 Do not prune any loose objects.
837</p>
838</dd>
Junio C Hamano97bcb482010-11-25 03:16:07839<dt class="hdlist1">
Junio C Hamano69a98582008-03-01 18:42:18840--quiet
841</dt>
842<dd>
843<p>
844 Suppress all progress reports.
845</p>
846</dd>
Junio C Hamano535ed7a2013-09-04 20:35:57847<dt class="hdlist1">
848--force
849</dt>
850<dd>
851<p>
Junio C Hamanoc14e6ad2014-10-31 20:25:53852 Force <code>git gc</code> to run even if there may be another <code>git gc</code>
Junio C Hamano535ed7a2013-09-04 20:35:57853 instance running on this repository.
854</p>
855</dd>
Junio C Hamanob9d9d902018-05-23 07:07:42856<dt class="hdlist1">
857--keep-largest-pack
858</dt>
859<dd>
860<p>
Junio C Hamano0a4482a2023-04-28 23:29:01861 All packs except the largest non-cruft pack, any packs marked
862 with a <code>.keep</code> file, and any cruft pack(s) are consolidated into
863 a single pack. When this option is used, <code>gc.bigPackThreshold</code>
864 is ignored.
Junio C Hamanob9d9d902018-05-23 07:07:42865</p>
866</dd>
Junio C Hamanoba4b9282008-07-06 05:20:31867</dl></div>
Junio C Hamanof65d9282007-01-22 09:00:13868</div>
Junio C Hamano9d971152012-12-19 00:43:11869</div>
870<div class="sect1">
Junio C Hamano2ba14712019-04-25 10:12:27871<h2 id="_aggressive">AGGRESSIVE</h2>
872<div class="sectionbody">
873<div class="paragraph"><p>When the <code>--aggressive</code> option is supplied, <a href="git-repack.html">git-repack(1)</a> will
874be invoked with the <code>-f</code> flag, which in turn will pass
875<code>--no-reuse-delta</code> to <a href="git-pack-objects.html">git-pack-objects(1)</a>. This will throw
876away any existing deltas and re-compute them, at the expense of
877spending much more time on the repacking.</p></div>
878<div class="paragraph"><p>The effects of this are mostly persistent, e.g. when packs and loose
879objects are coalesced into one another pack the existing deltas in
880that pack might get re-used, but there are also various cases where we
881might pick a sub-optimal delta from a newer pack instead.</p></div>
882<div class="paragraph"><p>Furthermore, supplying <code>--aggressive</code> will tweak the <code>--depth</code> and
883<code>--window</code> options passed to <a href="git-repack.html">git-repack(1)</a>. See the
884<code>gc.aggressiveDepth</code> and <code>gc.aggressiveWindow</code> settings below. By
885using a larger window size we&#8217;re more likely to find more optimal
886deltas.</p></div>
887<div class="paragraph"><p>It&#8217;s probably not worth it to use this option on a given repository
888without running tailored performance benchmarks on it. It takes a lot
889more time, and the resulting space/delta optimization may or may not
890be worth it. Not using this at all is the right trade-off for most
891users and their repositories.</p></div>
892</div>
893</div>
894<div class="sect1">
Junio C Hamanob9d9d902018-05-23 07:07:42895<h2 id="_configuration">CONFIGURATION</h2>
Junio C Hamano52299462006-12-28 00:59:38896<div class="sectionbody">
Junio C Hamanoba8baee2022-09-14 20:25:23897<div class="paragraph"><p>Everything below this line in this section is selectively included
898from the <a href="git-config.html">git-config(1)</a> documentation. The content is the same
899as what&#8217;s found there:</p></div>
Junio C Hamano2ba14712019-04-25 10:12:27900<div class="dlist"><dl>
901<dt class="hdlist1">
902gc.aggressiveDepth
903</dt>
904<dd>
905<p>
906 The depth parameter used in the delta compression
907 algorithm used by <em>git gc --aggressive</em>. This defaults
908 to 50, which is the default for the <code>--depth</code> option when
909 <code>--aggressive</code> isn&#8217;t in use.
910</p>
911<div class="paragraph"><p>See the documentation for the <code>--depth</code> option in
912<a href="git-repack.html">git-repack(1)</a> for more details.</p></div>
913</dd>
914<dt class="hdlist1">
915gc.aggressiveWindow
916</dt>
917<dd>
918<p>
919 The window size parameter used in the delta compression
920 algorithm used by <em>git gc --aggressive</em>. This defaults
921 to 250, which is a much more aggressive window size than
922 the default <code>--window</code> of 10.
923</p>
924<div class="paragraph"><p>See the documentation for the <code>--window</code> option in
925<a href="git-repack.html">git-repack(1)</a> for more details.</p></div>
926</dd>
927<dt class="hdlist1">
928gc.auto
929</dt>
930<dd>
931<p>
932 When there are approximately more than this many loose
933 objects in the repository, <code>git gc --auto</code> will pack them.
934 Some Porcelain commands use this command to perform a
935 light-weight garbage collection from time to time. The
936 default value is 6700.
937</p>
938<div class="paragraph"><p>Setting this to 0 disables not only automatic packing based on the
939number of loose objects, but any other heuristic <code>git gc --auto</code> will
940otherwise use to determine if there&#8217;s work to do, such as
941<code>gc.autoPackLimit</code>.</p></div>
942</dd>
943<dt class="hdlist1">
944gc.autoPackLimit
945</dt>
946<dd>
947<p>
948 When there are more than this many packs that are not
949 marked with <code>*.keep</code> file in the repository, <code>git gc
950 --auto</code> consolidates them into one larger pack. The
951 default value is 50. Setting this to 0 disables it.
952 Setting <code>gc.auto</code> to 0 will also disable this.
953</p>
954<div class="paragraph"><p>See the <code>gc.bigPackThreshold</code> configuration variable below. When in
955use, it&#8217;ll affect how the auto pack limit works.</p></div>
956</dd>
957<dt class="hdlist1">
958gc.autoDetach
959</dt>
960<dd>
961<p>
962 Make <code>git gc --auto</code> return immediately and run in background
963 if the system supports it. Default is true.
964</p>
965</dd>
966<dt class="hdlist1">
967gc.bigPackThreshold
968</dt>
969<dd>
970<p>
Junio C Hamano0a4482a2023-04-28 23:29:01971 If non-zero, all non-cruft packs larger than this limit are kept
972 when <code>git gc</code> is run. This is very similar to
973 <code>--keep-largest-pack</code> except that all non-cruft packs that meet
974 the threshold are kept, not just the largest pack. Defaults to
975 zero. Common unit suffixes of <em>k</em>, <em>m</em>, or <em>g</em> are supported.
Junio C Hamano2ba14712019-04-25 10:12:27976</p>
977<div class="paragraph"><p>Note that if the number of kept packs is more than gc.autoPackLimit,
978this configuration variable is ignored, all packs except the base pack
979will be repacked. After this the number of packs should go below
980gc.autoPackLimit and gc.bigPackThreshold should be respected again.</p></div>
981<div class="paragraph"><p>If the amount of memory estimated for <code>git repack</code> to run smoothly is
982not available and <code>gc.bigPackThreshold</code> is not set, the largest pack
983will also be excluded (this is the equivalent of running <code>git gc</code> with
Junio C Hamano85243982020-12-01 04:47:38984<code>--keep-largest-pack</code>).</p></div>
Junio C Hamano2ba14712019-04-25 10:12:27985</dd>
986<dt class="hdlist1">
987gc.writeCommitGraph
988</dt>
989<dd>
990<p>
991 If true, then gc will rewrite the commit-graph file when
992 <a href="git-gc.html">git-gc(1)</a> is run. When using <code>git gc --auto</code>
993 the commit-graph will be updated if housekeeping is
Junio C Hamanocb705392019-09-18 19:30:01994 required. Default is true. See <a href="git-commit-graph.html">git-commit-graph(1)</a>
Junio C Hamano2ba14712019-04-25 10:12:27995 for details.
996</p>
997</dd>
998<dt class="hdlist1">
999gc.logExpiry
1000</dt>
1001<dd>
1002<p>
1003 If the file gc.log exists, then <code>git gc --auto</code> will print
1004 its content and exit with status zero instead of running
1005 unless that file is more than <em>gc.logExpiry</em> old. Default is
1006 "1.day". See <code>gc.pruneExpire</code> for more ways to specify its
1007 value.
1008</p>
1009</dd>
1010<dt class="hdlist1">
1011gc.packRefs
1012</dt>
1013<dd>
1014<p>
1015 Running <code>git pack-refs</code> in a repository renders it
1016 unclonable by Git versions prior to 1.5.1.2 over dumb
1017 transports such as HTTP. This variable determines whether
1018 <em>git gc</em> runs <code>git pack-refs</code>. This can be set to <code>notbare</code>
1019 to enable it within all non-bare repos or it can be set to a
1020 boolean value. The default is <code>true</code>.
1021</p>
1022</dd>
1023<dt class="hdlist1">
Junio C Hamanoc926f622022-06-03 22:26:231024gc.cruftPacks
1025</dt>
1026<dd>
1027<p>
1028 Store unreachable objects in a cruft pack (see
1029 <a href="git-repack.html">git-repack(1)</a>) instead of as loose objects. The default
Junio C Hamano0a4482a2023-04-28 23:29:011030 is <code>true</code>.
Junio C Hamanoc926f622022-06-03 22:26:231031</p>
1032</dd>
1033<dt class="hdlist1">
Junio C Hamano2ba14712019-04-25 10:12:271034gc.pruneExpire
1035</dt>
1036<dd>
1037<p>
Junio C Hamanoc926f622022-06-03 22:26:231038 When <em>git gc</em> is run, it will call <em>prune --expire 2.weeks.ago</em>
1039 (and <em>repack --cruft --cruft-expiration 2.weeks.ago</em> if using
1040 cruft packs via <code>gc.cruftPacks</code> or <code>--cruft</code>). Override the
1041 grace period with this config variable. The value "now" may be
1042 used to disable this grace period and always prune unreachable
1043 objects immediately, or "never" may be used to suppress pruning.
1044 This feature helps prevent corruption when <em>git gc</em> runs
1045 concurrently with another process writing to the repository; see
1046 the "NOTES" section of <a href="git-gc.html">git-gc(1)</a>.
Junio C Hamano2ba14712019-04-25 10:12:271047</p>
1048</dd>
1049<dt class="hdlist1">
1050gc.worktreePruneExpire
1051</dt>
1052<dd>
1053<p>
1054 When <em>git gc</em> is run, it calls
1055 <em>git worktree prune --expire 3.months.ago</em>.
1056 This config variable can be used to set a different grace
1057 period. The value "now" may be used to disable the grace
1058 period and prune <code>$GIT_DIR/worktrees</code> immediately, or "never"
1059 may be used to suppress pruning.
1060</p>
1061</dd>
1062<dt class="hdlist1">
1063gc.reflogExpire
1064</dt>
1065<dt class="hdlist1">
1066gc.&lt;pattern&gt;.reflogExpire
1067</dt>
1068<dd>
1069<p>
1070 <em>git reflog expire</em> removes reflog entries older than
1071 this time; defaults to 90 days. The value "now" expires all
1072 entries immediately, and "never" suppresses expiration
1073 altogether. With "&lt;pattern&gt;" (e.g.
1074 "refs/stash") in the middle the setting applies only to
1075 the refs that match the &lt;pattern&gt;.
1076</p>
1077</dd>
1078<dt class="hdlist1">
1079gc.reflogExpireUnreachable
1080</dt>
1081<dt class="hdlist1">
1082gc.&lt;pattern&gt;.reflogExpireUnreachable
1083</dt>
1084<dd>
1085<p>
1086 <em>git reflog expire</em> removes reflog entries older than
1087 this time and are not reachable from the current tip;
1088 defaults to 30 days. The value "now" expires all entries
1089 immediately, and "never" suppresses expiration altogether.
1090 With "&lt;pattern&gt;" (e.g. "refs/stash")
1091 in the middle, the setting applies only to the refs that
1092 match the &lt;pattern&gt;.
1093</p>
1094<div class="paragraph"><p>These types of entries are generally created as a result of using <code>git
1095commit --amend</code> or <code>git rebase</code> and are the commits prior to the amend
1096or rebase occurring. Since these changes are not part of the current
1097project most users will want to expire them sooner, which is why the
1098default is more aggressive than <code>gc.reflogExpire</code>.</p></div>
1099</dd>
1100<dt class="hdlist1">
Junio C Hamano9469c132023-06-23 20:26:291101gc.recentObjectsHook
1102</dt>
1103<dd>
1104<p>
1105 When considering whether or not to remove an object (either when
1106 generating a cruft pack or storing unreachable objects as
1107 loose), use the shell to execute the specified command(s).
1108 Interpret their output as object IDs which Git will consider as
1109 "recent", regardless of their age. By treating their mtimes as
1110 "now", any objects (and their descendants) mentioned in the
1111 output will be kept regardless of their true age.
1112</p>
1113<div class="paragraph"><p>Output must contain exactly one hex object ID per line, and nothing
1114else. Objects which cannot be found in the repository are ignored.
1115Multiple hooks are supported, but all must exit successfully, else the
1116operation (either generating a cruft pack or unpacking unreachable
1117objects) will be halted.</p></div>
1118</dd>
1119<dt class="hdlist1">
Junio C Hamano2ba14712019-04-25 10:12:271120gc.rerereResolved
1121</dt>
1122<dd>
1123<p>
1124 Records of conflicted merge you resolved earlier are
1125 kept for this many days when <em>git rerere gc</em> is run.
1126 You can also use more human-readable "1.month.ago", etc.
1127 The default is 60 days. See <a href="git-rerere.html">git-rerere(1)</a>.
1128</p>
1129</dd>
1130<dt class="hdlist1">
1131gc.rerereUnresolved
1132</dt>
1133<dd>
1134<p>
1135 Records of conflicted merge you have not resolved are
1136 kept for this many days when <em>git rerere gc</em> is run.
1137 You can also use more human-readable "1.month.ago", etc.
1138 The default is 15 days. See <a href="git-rerere.html">git-rerere(1)</a>.
1139</p>
1140</dd>
1141</dl></div>
Junio C Hamano52299462006-12-28 00:59:381142</div>
Junio C Hamano9d971152012-12-19 00:43:111143</div>
1144<div class="sect1">
Junio C Hamanob9d9d902018-05-23 07:07:421145<h2 id="_notes">NOTES</h2>
Junio C Hamano2f102bb2008-04-26 02:23:371146<div class="sectionbody">
Junio C Hamano56ace3d2017-01-10 23:43:411147<div class="paragraph"><p><em>git gc</em> tries very hard not to delete objects that are referenced
Junio C Hamanoa8858312019-09-30 05:07:451148anywhere in your repository. In particular, it will keep not only
1149objects referenced by your current set of branches and tags, but also
Junio C Hamanoa372d5b2021-02-26 01:34:371150objects referenced by the index, remote-tracking branches, reflogs
1151(which may reference commits in branches that were later amended or
1152rewound), and anything else in the refs/* namespace. Note that a note
1153(of the kind created by <em>git notes</em>) attached to an object does not
1154contribute in keeping the object alive. If you are expecting some
1155objects to be deleted and they aren&#8217;t, check all of those locations
1156and decide whether it makes sense in your case to remove those
1157references.</p></div>
Junio C Hamano56ace3d2017-01-10 23:43:411158<div class="paragraph"><p>On the other hand, when <em>git gc</em> runs concurrently with another process,
1159there is a risk of it deleting an object that the other process is using
1160but hasn&#8217;t created a reference to. This may just cause the other process
1161to fail or may corrupt the repository if the other process later adds a
1162reference to the deleted object. Git has two features that significantly
1163mitigate this problem:</p></div>
1164<div class="olist arabic"><ol class="arabic">
1165<li>
1166<p>
1167Any object with modification time newer than the <code>--prune</code> date is kept,
1168 along with everything reachable from it.
1169</p>
1170</li>
1171<li>
1172<p>
1173Most operations that add an object to the database update the
1174 modification time of the object if it is already present so that #1
1175 applies.
1176</p>
1177</li>
1178</ol></div>
1179<div class="paragraph"><p>However, these features fall short of a complete solution, so users who
1180run commands concurrently have to live with some risk of corruption (which
Junio C Hamano2ba14712019-04-25 10:12:271181seems to be low in practice).</p></div>
Junio C Hamano2f102bb2008-04-26 02:23:371182</div>
Junio C Hamano9d971152012-12-19 00:43:111183</div>
1184<div class="sect1">
Junio C Hamano3e3aa812010-07-05 23:25:231185<h2 id="_hooks">HOOKS</h2>
1186<div class="sectionbody">
Junio C Hamano97bcb482010-11-25 03:16:071187<div class="paragraph"><p>The <em>git gc --auto</em> command will run the <em>pre-auto-gc</em> hook. See
Junio C Hamanoa28a9202012-06-21 07:08:231188<a href="githooks.html">githooks(5)</a> for more information.</p></div>
Junio C Hamano3e3aa812010-07-05 23:25:231189</div>
Junio C Hamano9d971152012-12-19 00:43:111190</div>
1191<div class="sect1">
Junio C Hamanoba4b9282008-07-06 05:20:311192<h2 id="_see_also">SEE ALSO</h2>
Junio C Hamano52299462006-12-28 00:59:381193<div class="sectionbody">
Junio C Hamanoa28a9202012-06-21 07:08:231194<div class="paragraph"><p><a href="git-prune.html">git-prune(1)</a>
1195<a href="git-reflog.html">git-reflog(1)</a>
1196<a href="git-repack.html">git-repack(1)</a>
1197<a href="git-rerere.html">git-rerere(1)</a></p></div>
Junio C Hamano52299462006-12-28 00:59:381198</div>
Junio C Hamano9d971152012-12-19 00:43:111199</div>
1200<div class="sect1">
Junio C Hamanoba4b9282008-07-06 05:20:311201<h2 id="_git">GIT</h2>
Junio C Hamano52299462006-12-28 00:59:381202<div class="sectionbody">
Junio C Hamanoa28a9202012-06-21 07:08:231203<div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
Junio C Hamano52299462006-12-28 00:59:381204</div>
Junio C Hamano7bd050f2011-09-22 06:32:221205</div>
Junio C Hamano9d971152012-12-19 00:43:111206</div>
Junio C Hamano7bd050f2011-09-22 06:32:221207<div id="footnotes"><hr /></div>
Junio C Hamano52299462006-12-28 00:59:381208<div id="footer">
1209<div id="footer-text">
Junio C Hamano2ef0ba32018-01-26 23:13:531210Last updated
Junio C Hamanoa7b2c102023-06-13 21:00:151211 2023-04-28 16:26:53 PDT
Junio C Hamano52299462006-12-28 00:59:381212</div>
1213</div>
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