====== Github Mirror ======
Yesterday I thought it would be a good idea to automatically mirror my [[http://github.com/chimeric|github repositories]], just in case sth. goes bad ;-). So I hacked togeter the following little bash script. It uses the [[http://develop.github.com/|github API]] to fetch the repository information, and the ever-handy [[http://xmlstar.sourceforge.net/|xmlstarlet]] to extract the needed data. It also keeps track of remote branches, but it contains no error logic atm., so use it at your own risk (as a daily cronjob for example). The rest is pretty selfexplanatory, just set your username, API token and backup directory in the script, make it executable and you're done. Comments for possible improvements are of course welcome!

<code bash githubmirr.sh>
#!/bin/bash
# github mirror script
# @author Michael Klier <chi@chimeric.de>

login=USERNAME
token=APITOKEN
backup_dir=BACKUPDIR

api_url=http://github.com/api/v2/xml

repos="$(wget --quiet --post-data="login=${login}&token=${token}" -O - ${api_url}/repos/show/${login} | xmlstarlet sel -T -t -m '//repository' -v name -o ' ')"

[[ ! -d ${backup_dir} ]] && mkdir -p ${backup_dir}
cd ${backup_dir}

for repo in $repos;
do
    branches="$(wget --quiet --post-data="login=${login}&token=${token}" -O - ${api_url}/repos/show/${login}/${repo}/branches | xmlstarlet sel -T -t -m '//branches/*' -v 'name()' -o ' ')"

    if [ ! -d ${repo} ]; then
        git clone -o github git:github.com/${login}/${repo}.git ${repo}
    fi

    cd ${repo}
    for branch in $branches;
    do
        git branch --track ${branch} github/${branch} 2>/dev/null
        git checkout ${branch}
        git pull github ${branch}
    done
    cd ${backup_dir}
done

# vim:ts=4:sw=4:et:enc=utf-8:
</code>

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<blog related>
  blog   chimeric
  tags   bash, scripting, git
</blog>