Improve language in git-merge.txt and related docs
[git/git.git] / Documentation / git-fast-export.txt
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1git-fast-export(1)
2==================
3
4NAME
5----
6git-fast-export - Git data exporter
7
8
9SYNOPSIS
10--------
b1889c36 11'git fast-export [options]' | 'git fast-import'
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12
13DESCRIPTION
14-----------
15This program dumps the given revisions in a form suitable to be piped
ba020ef5 16into 'git-fast-import'.
f2dc849e 17
29b802aa 18You can use it as a human-readable bundle replacement (see
5162e697 19linkgit:git-bundle[1]), or as a kind of an interactive
ba020ef5 20'git-filter-branch'.
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21
22
23OPTIONS
24-------
25--progress=<n>::
26 Insert 'progress' statements every <n> objects, to be shown by
ba020ef5 27 'git-fast-import' during import.
f2dc849e 28
ee4bc371 29--signed-tags=(verbatim|warn|strip|abort)::
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30 Specify how to handle signed tags. Since any transformation
31 after the export can change the tag names (which can also happen
32 when excluding revisions) the signatures will not match.
33+
34When asking to 'abort' (which is the default), this program will die
35when encountering a signed tag. With 'strip', the tags will be made
ee4bc371 36unsigned, with 'verbatim', they will be silently exported
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37and with 'warn', they will be exported, but you will see a warning.
38
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39-M::
40-C::
41 Perform move and/or copy detection, as described in the
42 linkgit:git-diff[1] manual page, and use it to generate
43 rename and copy commands in the output dump.
44+
45Note that earlier versions of this command did not complain and
46produced incorrect results if you gave these options.
47
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48--export-marks=<file>::
49 Dumps the internal marks table to <file> when complete.
50 Marks are written one per line as `:markid SHA-1`. Only marks
51 for revisions are dumped; marks for blobs are ignored.
52 Backends can use this file to validate imports after they
53 have been completed, or to save the marks table across
54 incremental runs. As <file> is only opened and truncated
55 at completion, the same path can also be safely given to
56 \--import-marks.
57
58--import-marks=<file>::
59 Before processing any input, load the marks specified in
60 <file>. The input file must exist, must be readable, and
61 must use the same format as produced by \--export-marks.
62+
63Any commits that have already been marked will not be exported again.
64If the backend uses a similar \--import-marks file, this allows for
65incremental bidirectional exporting of the repository by keeping the
66marks the same across runs.
67
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68
69EXAMPLES
70--------
71
72-------------------------------------------------------------------
73$ git fast-export --all | (cd /empty/repository && git fast-import)
74-------------------------------------------------------------------
75
76This will export the whole repository and import it into the existing
77empty repository. Except for reencoding commits that are not in
78UTF-8, it would be a one-to-one mirror.
79
80-----------------------------------------------------
81$ git fast-export master~5..master |
82 sed "s|refs/heads/master|refs/heads/other|" |
83 git fast-import
84-----------------------------------------------------
85
86This makes a new branch called 'other' from 'master~5..master'
87(i.e. if 'master' has linear history, it will take the last 5 commits).
88
89Note that this assumes that none of the blobs and commit messages
90referenced by that revision range contains the string
91'refs/heads/master'.
92
93
94Limitations
95-----------
96
ba020ef5 97Since 'git-fast-import' cannot tag trees, you will not be
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98able to export the linux-2.6.git repository completely, as it contains
99a tag referencing a tree instead of a commit.
100
101
102Author
103------
104Written by Johannes E. Schindelin <johannes.schindelin@gmx.de>.
105
106Documentation
107--------------
108Documentation by Johannes E. Schindelin <johannes.schindelin@gmx.de>.
109
110GIT
111---
9e1f0a85 112Part of the linkgit:git[1] suite