docs:git:backing_up_repository [hartungdesign.net wiki]

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====== backing up repository ======

===== notes =====
  * do **NOT** use rsync
    * git is smarter about what needs copied and will be faster
    * a commit or other action could be in progress

===== using a hook =====
  * you have a myproject directory containing the .git repository, and would like to back up the repository contents  
  * create the backup repo<code>
cd /backup/destination
git init --bare myproject.git
</code>
  * do the initial push of your project to the backup repo<code>
cd /myproject
git push --all --force /backup/destination/myproject.git
</code>
  * in your local git repo, make a copy of the .git/hooks/post-commit file and modify it similar to this<code>
# assuming you have a mount point at /gitshare
echo -e "backing up repo...\n";
git push --all --force /backup/destination/myproject.git
</code>

===== without changing local repo =====
  * you have a myproject directory containing the .git repository, and would like to back up the repository contents
  * clone your project as a "mirror"<code>
cd /backup/destination
git clone --no-hardlinks --mirror /path/to/myproject backupfoldername
</code>
  * work, work, work
  * commit inside myproject
  * time to backup...go to the backup directory and "fetch" the project<code>
cd /backup/destination/backupfoldername
git fetch
</code>

===== automating backup of many repos =====
  * you have many projects that you want to backup, like to a usb drive
  * clone each project<code>
cd /path/to/your/usb/drive/destfolder
git clone --mirror /project.git
</code>
  * create a shell script (i.e. **pullall.sh**) to loop through each project and fetch<code>
#!/bin/sh

`which ls` -1d *.git | while read item;do
echo -e "updating ${item}...\n"
cd "${item}"
git fetch --all --force
cd ..
done
</code>
  * run the script with ./pullall.sh (make sure it is executable: chmod 755 pullall.sh)