git-commit-vandalism/Documentation/urls.txt

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GIT URLS[[URLS]]
----------------
In general, URLs contain information about the transport protocol, the
address of the remote server, and the path to the repository.
Depending on the transport protocol, some of this information may be
absent.
Git supports ssh, git, http, and https protocols (in addition, ftp,
and ftps can be used for fetching and rsync can be used for fetching
and pushing, but these are inefficient and deprecated; do not use
them).
The following syntaxes may be used with them:
- ssh://{startsb}user@{endsb}host.xz{startsb}:port{endsb}/path/to/repo.git/
- git://host.xz{startsb}:port{endsb}/path/to/repo.git/
- http{startsb}s{endsb}://host.xz{startsb}:port{endsb}/path/to/repo.git/
- ftp{startsb}s{endsb}://host.xz{startsb}:port{endsb}/path/to/repo.git/
- rsync://host.xz/path/to/repo.git/
An alternative scp-like syntax may also be used with the ssh protocol:
- {startsb}user@{endsb}host.xz:path/to/repo.git/
This syntax is only recognized if there are no slashes before the
first colon. This helps differentiate a local path that contains a
colon. For example the local path `foo:bar` could be specified as an
absolute path or `./foo:bar` to avoid being misinterpreted as an ssh
url.
The ssh and git protocols additionally support ~username expansion:
- ssh://{startsb}user@{endsb}host.xz{startsb}:port{endsb}/~{startsb}user{endsb}/path/to/repo.git/
- git://host.xz{startsb}:port{endsb}/~{startsb}user{endsb}/path/to/repo.git/
- {startsb}user@{endsb}host.xz:/~{startsb}user{endsb}/path/to/repo.git/
For local repositories, also supported by Git natively, the following
syntaxes may be used:
- /path/to/repo.git/
- \file:///path/to/repo.git/
git-clone: aggressively optimize local clone behaviour. This changes the behaviour of cloning from a repository on the local machine, by defaulting to "-l" (use hardlinks to share files under .git/objects) and making "-l" a no-op. A new option, --no-hardlinks, is also added to cause file-level copy of files under .git/objects while still avoiding the normal "pack to pipe, then receive and index pack" network transfer overhead. The old behaviour of local cloning without -l nor -s is availble by specifying the source repository with the newly introduced file:///path/to/repo.git/ syntax (i.e. "same as network" cloning). * With --no-hardlinks (i.e. have all .git/objects/ copied via cpio) would not catch the source repository corruption, and also risks corrupted recipient repository if an alpha-particle hits memory cell while indexing and resolving deltas. As long as the recipient is created uncorrupted, you have a good back-up. * same-as-network is expensive, but it would catch the breakage of the source repository. It still risks corrupted recipient repository due to hardware failure. As long as the recipient is created uncorrupted, you have a good back-up. * The new default on the same filesystem, as long as the source repository is healthy, it is very likely that the recipient would be, too. Also it is very cheap. You do not get any back-up benefit, though. None of the method is resilient against the source repository corruption, so let's discount that from the comparison. Then the difference with and without --no-hardlinks matters primarily if you value the back-up benefit or not. If you want to use the cloned repository as a back-up, then it is cheaper to do a clone with --no-hardlinks and two git-fsck (source before clone, recipient after clone) than same-as-network clone, especially as you are likely to do a git-fsck on the recipient if you are so paranoid anyway. Which leads me to believe that being able to use file:/// is probably a good idea, if only for testability, but probably of little practical value. We default to hardlinked clone for everyday use, and paranoids can use --no-hardlinks as a way to make a back-up. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-02 08:42:36 +02:00
ifndef::git-clone[]
These two syntaxes are mostly equivalent, except when cloning, when
the former implies --local option. See linkgit:git-clone[1] for
details.
endif::git-clone[]
ifdef::git-clone[]
These two syntaxes are mostly equivalent, except the former implies
--local option.
endif::git-clone[]
When Git doesn't know how to handle a certain transport protocol, it
attempts to use the 'remote-<transport>' remote helper, if one
exists. To explicitly request a remote helper, the following syntax
may be used:
- <transport>::<address>
where <address> may be a path, a server and path, or an arbitrary
URL-like string recognized by the specific remote helper being
invoked. See linkgit:gitremote-helpers[1] for details.
If there are a large number of similarly-named remote repositories and
you want to use a different format for them (such that the URLs you
use will be rewritten into URLs that work), you can create a
configuration section of the form:
------------
[url "<actual url base>"]
insteadOf = <other url base>
------------
For example, with this:
------------
[url "git://git.host.xz/"]
insteadOf = host.xz:/path/to/
insteadOf = work:
------------
a URL like "work:repo.git" or like "host.xz:/path/to/repo.git" will be
rewritten in any context that takes a URL to be "git://git.host.xz/repo.git".
If you want to rewrite URLs for push only, you can create a
configuration section of the form:
------------
[url "<actual url base>"]
pushInsteadOf = <other url base>
------------
For example, with this:
------------
[url "ssh://example.org/"]
pushInsteadOf = git://example.org/
------------
a URL like "git://example.org/path/to/repo.git" will be rewritten to
"ssh://example.org/path/to/repo.git" for pushes, but pulls will still
use the original URL.