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doc/tips/publishing_your_files_to_the_public.mdwn
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# Creating a special S3 remote to hold files shareable by URL
You have a git-annex repository, and you want to publish the files
in it to the public. One way is to
[[setup_a_public_repository_on_a_web_site]], but perhaps you don't have a
web server that can run git-annex, and you just want to publish the current
files, not the whole git-annex repository.
In this example, I'll assume you'll be creating a bucket in Amazon S3 named
$BUCKET and a special remote named public-s3. Be sure to replace $BUCKET
with something like "public-bucket-joey" when you follow along in your
shell.
The [[git-annex export|git-annex-export]] command is the solution. It lets
a tree of files from your git-annex repository be published to Amazon
[[special_remotes/S3]], as well as other types of special remotes like
[[special_remotes/webdav]] and [[special_remotes/directory]].
# publishing to Amazon S3
Let's create a bucket in Amazon S3 named $BUCKET and a special remote
named public-s3. Exporting has to be enabled when setting up a special
remote for the first time.
Set up your special [[S3 remote|special_remotes/S3]] with (at least) these options:
git annex initremote public-s3 type=s3 encryption=none bucket=$BUCKET exporttree=yes public=yes encryption=none
Be sure to replace $BUCKET with something like
"public-bucket-joey" when you follow along in your shell.
[[!template id=note text="""
Want to only export files in a subdirectory of the master branch?
Use `master:subdir`.
Any git treeish can be used with the export command, so you can also
export tags, etc.
"""]]
Then export the files in the master branch to the remote:
git annex export master --to public-s3
You can run that command again to update the export. See
[[git-annex-export]] for details.
Each exported file will be available to the public from
Each exported file will be available to the public at
`http://$BUCKET.s3.amazonaws.com/$FILE`
Note: Bear in mind that Amazon will charge the owner of the bucket
for public downloads from that bucket.
# Indexes
# Tracking changes to master
So far, the current contents of the master branch have been exported to
public-s3, and to update the export when the branch changes, you have to
remember to run `git annex export` again. To automate updating the export,
enable tracking.
git annex export --tracking master --to public-s3
That tells git-annex that the export should track changes to master.
When you run `git annex sync --content`, it will update all tracking
exports. The git-annex assistant also automatically updates tracking
exports.
# Amazon S3 indexes
By default, there is no index.html file exported, so if you open
`http://$BUCKET.s3.amazonaws.com/` in a web browser, you'll see an