Easily back up the content of a dokuwiki site to a git repository each hour. Only commits when there are changes.

backup-dokuwiki.sh

#!/bin/sh
cd /var/www/dokuwiki/data && git add . && git add -u && git commit -a -m "Content update `date +'%H:%M %d/%m/%Y %Z'`" && git push origin master

crontab

# m h  dom mon dow   command
0 * * * * /path/to/backup-dokuwiki.sh >> /var/log/backup-dokuwiki.log