git-annex-setup.sh

# Situation:
# * one laptop computer
# * one desktop computer
# * one remote server
# * one S3 bucket
#
# The laptop computer and the desktop computer have a directory ~/Docs with many GB of data.
# We do not want to download the data we already have

# Initial setup on the laptop computer

hostname # => laptop

cd ~/Docs/
git init .
git annex init "laptop"
git annex direct

git remote add origin git+ssh://remote.example.org/Docs.git # Docs.git contains an empty bare git repository
export AWS_ACCESS_KEY_ID=aabb11cc00
export AWS_SECRET_ACCESS_KEY=ee4422ffcc
git annex initremote s3 bucket=backup type=S3 encryption="gpg-email@example.net" datacenter=EU fileprefix="Docs/"

git annex add .
git annex copy --to s3
git annex sync

# Initial setup on the desktop computer

hostname # => desktop

mv ~/Docs ~/Docs.orig

git clone -n git+ssh://remote.example.org/Docs.git
cp -P --remove-destination -a ~/Docs.orig/* ~/Docs/ # beware of timestamps and hidden files, use rsync

cd ~/Docs
# FIXME: maybe use enableremote?
export AWS_ACCESS_KEY_ID=aabb11cc00
export AWS_SECRET_ACCESS_KEY=ee4422ffcc
git annex initremote s3 bucket=backup type=S3 encryption="gpg-email@example.net" datacenter=EU fileprefix="Docs/"

git annex add .
git annex sync

# ==========

# Add one file on the laptop

hostname # => laptop

git add .
git annex sync

# Fetch 

hostname # => desktop

git annex sync