146 lines
5.3 KiB
Markdown
146 lines
5.3 KiB
Markdown
# NAME
|
|
|
|
git-annex - manage files with git, without checking their contents in
|
|
|
|
# SYNOPSIS
|
|
|
|
git annex subcommand [path ...]
|
|
|
|
# DESCRIPTION
|
|
|
|
git-annex allows managing files with git, without checking the file
|
|
contents into git. While that may seem paradoxical, it is useful when
|
|
dealing with files larger than git can currently easily handle, whether due
|
|
to limitations in memory, checksumming time, or disk space.
|
|
|
|
Even without file content tracking, being able to manage files with git,
|
|
move files around and delete files with versioned directory trees, and use
|
|
branches and distributed clones, are all very handy reasons to use git. And
|
|
annexed files can co-exist in the same git repository with regularly
|
|
versioned files, which is convenient for maintaining documents, Makefiles,
|
|
etc that are associated with annexed files but that benefit from full
|
|
revision control.
|
|
|
|
When a file is annexed, its content is moved into a key-value store, and
|
|
a symlink is made that points to the content. These symlinks are checked into
|
|
git and versioned like regular files. You can move them around, delete
|
|
them, and so on. Pushing to another git repository will make git-annex
|
|
there aware of the annexed file, and it can be used to retrieve its
|
|
content from the key-value store.
|
|
|
|
# EXAMPLES
|
|
|
|
# git annex get video/hackity_hack_and_kaxxt.mov
|
|
get video/_why_hackity_hack_and_kaxxt.mov (not available)
|
|
I was unable to access these remotes: server
|
|
Try making some of these repositories available:
|
|
5863d8c0-d9a9-11df-adb2-af51e6559a49 -- my home file server
|
|
58d84e8a-d9ae-11df-a1aa-ab9aa8c00826 -- portable USB drive
|
|
ca20064c-dbb5-11df-b2fe-002170d25c55 -- backup SATA drive
|
|
failed
|
|
# sudo mount /media/usb
|
|
# git remote add usbdrive /media/usb
|
|
# git annex get video/hackity_hack_and_kaxxt.mov
|
|
get video/hackity_hack_and_kaxxt.mov (copying from usbdrive...) ok
|
|
# git commit -a -m "got a video I want to rewatch on the plane"
|
|
|
|
# git annex add iso
|
|
add iso/Debian_5.0.iso ok
|
|
# git commit -a -m "saving Debian CD for later"
|
|
|
|
# git annex push usbdrive iso
|
|
error: push not yet implemented!
|
|
# git annex drop iso
|
|
drop iso/Debian_5.0.iso ok
|
|
# git commit -a -m "freed up space"
|
|
|
|
# SUBCOMMANDS
|
|
|
|
Like many git commands, git-annex can be passed a path that
|
|
is either a file or a directory. In the latter case it acts on all relevant
|
|
files in the directory.
|
|
|
|
Many git-annex subcommands will stage changes for later `git commit` by you.
|
|
|
|
* add [path ...]
|
|
|
|
Adds files in the path to the annex. Files that are already checked into
|
|
git, or that git has been configured to ignore will be silently skipped.
|
|
|
|
* get [path ...]
|
|
|
|
Makes the content of annexed files available in this repository. Depending
|
|
on the backend used, this will involve copying them from another repository,
|
|
or downloading them, or transferring them from some kind of key-value store.
|
|
|
|
* drop [path ...]
|
|
|
|
Drops the content of annexed files from this repository.
|
|
|
|
git-annex may refuse to drop a content if the backend does not think
|
|
it is safe to do so.
|
|
|
|
* unannex [path ...]
|
|
|
|
Use this to undo an accidental add command. This is not the command you
|
|
should use if you intentionally annexed a file and don't want its contents
|
|
any more. In that case you should use `git annex drop` instead, and you
|
|
can also `git rm` the file.
|
|
|
|
* init "description"
|
|
|
|
Initializes git-annex with a descripotion of the git repository.
|
|
This is an optional, but recommended step.
|
|
|
|
* fix [path ...]
|
|
|
|
Fixes up symlinks that have become broken to again point to annexed content.
|
|
This is useful to run if you have been moving the symlinks around.
|
|
|
|
# OPTIONS
|
|
|
|
* --force
|
|
|
|
Force unsafe actions, such as dropping a file's content when no other
|
|
source of it can be verified to still exist. Use with care.
|
|
|
|
## CONFIGURATION
|
|
|
|
Like other git commands, git-annex is configured via `.git/config`.
|
|
|
|
* `annex.uuid` -- a unique UUID for this repository (automatically set)
|
|
* `annex.numcopies` -- number of copies of files to keep across all
|
|
repositories (default: 1)
|
|
* `annex.backends` -- space-separated list of names of
|
|
the key-value backends to use. The first listed is used to store
|
|
new files. (default: "WORM SHA1 URL")
|
|
* `remote.<name>.annex-cost` -- When determining which repository to
|
|
transfer annexed files from or to, ones with lower costs are preferred.
|
|
The default cost is 100 for local repositories, and 200 for remote
|
|
repositories. Note that other factors may be configured when pushing
|
|
files to repositories, in particular, whether the repository is on
|
|
a filesystem with sufficient free space.
|
|
* `remote.<name>.annex-uuid` -- git-annex caches UUIDs of repositories
|
|
here.
|
|
|
|
# FILES
|
|
|
|
These files are used, in your git repository:
|
|
|
|
`.git/annex/` contains the annexed file contents that are currently
|
|
available. Annexed files in your git repository symlink to that content.
|
|
|
|
`.git-annex/uuid.log` is used to map between repository UUID and
|
|
decscriptions. You may edit it.
|
|
|
|
`.git-annex/*.log` is where git-annex records its content tracking
|
|
information. These files should be committed to git.
|
|
|
|
`.git-annex/.gitattributes` is configured to use git's union merge driver
|
|
to avoid conflicts when merging files in the `.git-annex` directory.
|
|
|
|
# AUTHOR
|
|
|
|
Joey Hess <joey@ikiwiki.info>
|
|
|
|
Warning: this page is automatically made into a man page via [mdwn2man](http://git.ikiwiki.info/?p=ikiwiki;a=blob;f=mdwn2man;hb=HEAD). Edit with care
|