6 git-gc - Cleanup unnecessary files and optimize the local repository
15 Runs a number of housekeeping tasks within the current repository,
16 such as compressing file revisions (to reduce disk space and increase
17 performance) and removing unreachable objects which may have been
18 created from prior invocations of gitlink:git-add[1].
20 Users are encouraged to run this task on a regular basis within
21 each repository to maintain good disk space utilization and good
22 operating performance.
28 Usually `git-gc` packs refs, expires old reflog entries,
30 and removes old 'rerere' records. Removal
31 of unreferenced loose objects is an unsafe operation
32 while other git operations are in progress, so it is not
33 done by default. Pass this option if you want it, and only
34 when you know nobody else is creating new objects in the
35 repository at the same time (e.g. never use this option
42 The optional configuration variable 'gc.reflogExpire' can be
43 set to indicate how long historical entries within each branch's
44 reflog should remain available in this repository. The setting is
45 expressed as a length of time, for example '90 days' or '3 months'.
46 It defaults to '90 days'.
48 The optional configuration variable 'gc.reflogExpireUnreachable'
49 can be set to indicate how long historical reflog entries which
50 are not part of the current branch should remain available in
51 this repository. These types of entries are generally created as
52 a result of using `git commit \--amend` or `git rebase` and are the
53 commits prior to the amend or rebase occurring. Since these changes
54 are not part of the current project most users will want to expire
55 them sooner. This option defaults to '30 days'.
57 The optional configuration variable 'gc.rerereresolved' indicates
58 how long records of conflicted merge you resolved earlier are
59 kept. This defaults to 60 days.
61 The optional configuration variable 'gc.rerereunresolved' indicates
62 how long records of conflicted merge you have not resolved are
63 kept. This defaults to 15 days.
65 The optional configuration variable 'gc.packrefs' determines if
66 `git gc` runs `git-pack-refs`. Without the configuration, `git-pack-refs`
67 is not run in bare repositories by default, to allow older dumb-transport
68 clients fetch from the repository, but this will change in the future.
79 Written by Shawn O. Pearce <spearce@spearce.org>
83 Part of the gitlink:git[7] suite