741 lines
41 KiB
HTML
741 lines
41 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="Asciidoctor 1.5.8">
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<title>git-fast-export(1)</title>
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<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">
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<style>
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/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
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/* Uncomment @import statement below to use as custom stylesheet */
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/*@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";*/
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strong strong{font-weight:400}
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</head>
|
|
<body class="manpage">
|
|
<div id="header">
|
|
<h1>git-fast-export(1) Manual Page</h1>
|
|
<h2 id="_name">NAME</h2>
|
|
<div class="sectionbody">
|
|
<p>git-fast-export - Git data exporter</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 fast-export [<options>]</em> | <em>git fast-import</em></pre>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_description">DESCRIPTION</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>This program dumps the given revisions in a form suitable to be piped
|
|
into <em>git fast-import</em>.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>You can use it as a human-readable bundle replacement (see
|
|
<a href="git-bundle.html">git-bundle</a>(1)), or as a kind of an interactive
|
|
<em>git filter-branch</em>.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_options">OPTIONS</h2>
|
|
<div class="sectionbody">
|
|
<div class="dlist">
|
|
<dl>
|
|
<dt class="hdlist1">--progress=<n></dt>
|
|
<dd>
|
|
<p>Insert <em>progress</em> statements every <n> objects, to be shown by
|
|
<em>git fast-import</em> during import.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--signed-tags=(verbatim|warn|warn-strip|strip|abort)</dt>
|
|
<dd>
|
|
<p>Specify how to handle signed tags. Since any transformation
|
|
after the export can change the tag names (which can also happen
|
|
when excluding revisions) the signatures will not match.</p>
|
|
<div class="paragraph">
|
|
<p>When asking to <em>abort</em> (which is the default), this program will die
|
|
when encountering a signed tag. With <em>strip</em>, the tags will silently
|
|
be made unsigned, with <em>warn-strip</em> they will be made unsigned but a
|
|
warning will be displayed, with <em>verbatim</em>, they will be silently
|
|
exported and with <em>warn</em>, they will be exported, but you will see a
|
|
warning.</p>
|
|
</div>
|
|
</dd>
|
|
<dt class="hdlist1">--tag-of-filtered-object=(abort|drop|rewrite)</dt>
|
|
<dd>
|
|
<p>Specify how to handle tags whose tagged object is filtered out.
|
|
Since revisions and files to export can be limited by path,
|
|
tagged objects may be filtered completely.</p>
|
|
<div class="paragraph">
|
|
<p>When asking to <em>abort</em> (which is the default), this program will die
|
|
when encountering such a tag. With <em>drop</em> it will omit such tags from
|
|
the output. With <em>rewrite</em>, if the tagged object is a commit, it will
|
|
rewrite the tag to tag an ancestor commit (via parent rewriting; see
|
|
<a href="git-rev-list.html">git-rev-list</a>(1))</p>
|
|
</div>
|
|
</dd>
|
|
<dt class="hdlist1">-M</dt>
|
|
<dt class="hdlist1">-C</dt>
|
|
<dd>
|
|
<p>Perform move and/or copy detection, as described in the
|
|
<a href="git-diff.html">git-diff</a>(1) manual page, and use it to generate
|
|
rename and copy commands in the output dump.</p>
|
|
<div class="paragraph">
|
|
<p>Note that earlier versions of this command did not complain and
|
|
produced incorrect results if you gave these options.</p>
|
|
</div>
|
|
</dd>
|
|
<dt class="hdlist1">--export-marks=<file></dt>
|
|
<dd>
|
|
<p>Dumps the internal marks table to <file> when complete.
|
|
Marks are written one per line as <code>:markid SHA-1</code>. Only marks
|
|
for revisions are dumped; marks for blobs are ignored.
|
|
Backends can use this file to validate imports after they
|
|
have been completed, or to save the marks table across
|
|
incremental runs. As <file> is only opened and truncated
|
|
at completion, the same path can also be safely given to
|
|
--import-marks.
|
|
The file will not be written if no new object has been
|
|
marked/exported.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--import-marks=<file></dt>
|
|
<dd>
|
|
<p>Before processing any input, load the marks specified in
|
|
<file>. The input file must exist, must be readable, and
|
|
must use the same format as produced by --export-marks.</p>
|
|
<div class="paragraph">
|
|
<p>Any commits that have already been marked will not be exported again.
|
|
If the backend uses a similar --import-marks file, this allows for
|
|
incremental bidirectional exporting of the repository by keeping the
|
|
marks the same across runs.</p>
|
|
</div>
|
|
</dd>
|
|
<dt class="hdlist1">--fake-missing-tagger</dt>
|
|
<dd>
|
|
<p>Some old repositories have tags without a tagger. The
|
|
fast-import protocol was pretty strict about that, and did not
|
|
allow that. So fake a tagger to be able to fast-import the
|
|
output.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--use-done-feature</dt>
|
|
<dd>
|
|
<p>Start the stream with a <em>feature done</em> stanza, and terminate
|
|
it with a <em>done</em> command.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--no-data</dt>
|
|
<dd>
|
|
<p>Skip output of blob objects and instead refer to blobs via
|
|
their original SHA-1 hash. This is useful when rewriting the
|
|
directory structure or history of a repository without
|
|
touching the contents of individual files. Note that the
|
|
resulting stream can only be used by a repository which
|
|
already contains the necessary objects.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--full-tree</dt>
|
|
<dd>
|
|
<p>This option will cause fast-export to issue a "deleteall"
|
|
directive for each commit followed by a full list of all files
|
|
in the commit (as opposed to just listing the files which are
|
|
different from the commit’s first parent).</p>
|
|
</dd>
|
|
<dt class="hdlist1">--anonymize</dt>
|
|
<dd>
|
|
<p>Anonymize the contents of the repository while still retaining
|
|
the shape of the history and stored tree. See the section on
|
|
<code>ANONYMIZING</code> below.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--reference-excluded-parents</dt>
|
|
<dd>
|
|
<p>By default, running a command such as <code>git fast-export
|
|
master~5..master</code> will not include the commit master~5
|
|
and will make master~4 no longer have master~5 as
|
|
a parent (though both the old master~4 and new
|
|
master~4 will have all the same files). Use
|
|
--reference-excluded-parents to instead have the the stream
|
|
refer to commits in the excluded range of history by their
|
|
sha1sum. Note that the resulting stream can only be used by a
|
|
repository which already contains the necessary parent
|
|
commits.</p>
|
|
</dd>
|
|
<dt class="hdlist1">--show-original-ids</dt>
|
|
<dd>
|
|
<p>Add an extra directive to the output for commits and blobs,
|
|
<code>original-oid <SHA1SUM></code>. While such directives will likely be
|
|
ignored by importers such as git-fast-import, it may be useful
|
|
for intermediary filters (e.g. for rewriting commit messages
|
|
which refer to older commits, or for stripping blobs by id).</p>
|
|
</dd>
|
|
<dt class="hdlist1">--refspec</dt>
|
|
<dd>
|
|
<p>Apply the specified refspec to each ref exported. Multiple of them can
|
|
be specified.</p>
|
|
</dd>
|
|
<dt class="hdlist1">[<git-rev-list-args>…​]</dt>
|
|
<dd>
|
|
<p>A list of arguments, acceptable to <em>git rev-parse</em> and
|
|
<em>git rev-list</em>, that specifies the specific objects and references
|
|
to export. For example, <code>master~10..master</code> causes the
|
|
current master reference to be exported along with all objects
|
|
added since its 10th ancestor commit and (unless the
|
|
--reference-excluded-parents option is specified) all files
|
|
common to master~9 and master~10.</p>
|
|
</dd>
|
|
</dl>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_examples">EXAMPLES</h2>
|
|
<div class="sectionbody">
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>$ git fast-export --all | (cd /empty/repository && git fast-import)</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>This will export the whole repository and import it into the existing
|
|
empty repository. Except for reencoding commits that are not in
|
|
UTF-8, it would be a one-to-one mirror.</p>
|
|
</div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>$ git fast-export master~5..master |
|
|
sed "s|refs/heads/master|refs/heads/other|" |
|
|
git fast-import</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>This makes a new branch called <em>other</em> from <em>master~5..master</em>
|
|
(i.e. if <em>master</em> has linear history, it will take the last 5 commits).</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>Note that this assumes that none of the blobs and commit messages
|
|
referenced by that revision range contains the string
|
|
<em>refs/heads/master</em>.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_anonymizing">ANONYMIZING</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>If the <code>--anonymize</code> option is given, git will attempt to remove all
|
|
identifying information from the repository while still retaining enough
|
|
of the original tree and history patterns to reproduce some bugs. The
|
|
goal is that a git bug which is found on a private repository will
|
|
persist in the anonymized repository, and the latter can be shared with
|
|
git developers to help solve the bug.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>With this option, git will replace all refnames, paths, blob contents,
|
|
commit and tag messages, names, and email addresses in the output with
|
|
anonymized data. Two instances of the same string will be replaced
|
|
equivalently (e.g., two commits with the same author will have the same
|
|
anonymized author in the output, but bear no resemblance to the original
|
|
author string). The relationship between commits, branches, and tags is
|
|
retained, as well as the commit timestamps (but the commit messages and
|
|
refnames bear no resemblance to the originals). The relative makeup of
|
|
the tree is retained (e.g., if you have a root tree with 10 files and 3
|
|
trees, so will the output), but their names and the contents of the
|
|
files will be replaced.</p>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>If you think you have found a git bug, you can start by exporting an
|
|
anonymized stream of the whole repository:</p>
|
|
</div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>$ git fast-export --anonymize --all >anon-stream</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>Then confirm that the bug persists in a repository created from that
|
|
stream (many bugs will not, as they really do depend on the exact
|
|
repository contents):</p>
|
|
</div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>$ git init anon-repo
|
|
$ cd anon-repo
|
|
$ git fast-import <../anon-stream
|
|
$ ... test your bug ...</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>If the anonymized repository shows the bug, it may be worth sharing
|
|
<code>anon-stream</code> along with a regular bug report. Note that the anonymized
|
|
stream compresses very well, so gzipping it is encouraged. If you want
|
|
to examine the stream to see that it does not contain any private data,
|
|
you can peruse it directly before sending. You may also want to try:</p>
|
|
</div>
|
|
<div class="listingblock">
|
|
<div class="content">
|
|
<pre>$ perl -pe 's/\d+/X/g' <anon-stream | sort -u | less</pre>
|
|
</div>
|
|
</div>
|
|
<div class="paragraph">
|
|
<p>which shows all of the unique lines (with numbers converted to "X", to
|
|
collapse "User 0", "User 1", etc into "User X"). This produces a much
|
|
smaller output, and it is usually easy to quickly confirm that there is
|
|
no private data in the stream.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_limitations">LIMITATIONS</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>Since <em>git fast-import</em> cannot tag trees, you will not be
|
|
able to export the linux.git repository completely, as it contains
|
|
a tag referencing a tree instead of a commit.</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_see_also">SEE ALSO</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p><a href="git-fast-import.html">git-fast-import</a>(1)</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="sect1">
|
|
<h2 id="_git">GIT</h2>
|
|
<div class="sectionbody">
|
|
<div class="paragraph">
|
|
<p>Part of the <a href="git.html">git</a>(1) suite</p>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div id="footer">
|
|
<div id="footer-text">
|
|
Last updated 2019-02-26 19:31:11 UTC
|
|
</div>
|
|
</div>
|
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</body>
|
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</html> |