backup-etc.sh

#!/bin/bash -e

PATH=/usr/bin:/usr/sbin:/bin:/sbin

hostname=`hostname -f`

# /var/lib/backups can be e.g. NFS mounted
backup_dir=/var/lib/backups/etc/${hostname}/

if [ ! -d /etc/.git ] ; then
    apt-get -y install etckeeper git rsync
    sed -i -e "s/^VCS.*/VCS=git/" /etc/etckeeper/etckeeper.conf
    etckeeper init
fi

mkdir -p ${backup_dir}/etc

rsync --quiet -avh --delete --delete-after /etc/ ${backup_dir}/etc/