This tiny python script automatically sets the latest xkcd comic as your wallpaper, provided you set the script as a cron job.
Make sure you install PyGObject:
Fedora (YUM): yum install pygobject3
Fedora (DNF): dnf install pygobject3
Debian & Ubuntu: apt-get install python-gi
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Clone and cd into the repository and run python setup.py install
To update your wallpaper run xkcd-wallpaper and it should be updated.
Now for it to automatically change your wallpaper, set it as a cron job. Setting up a cron job is easy, you can read about it here.
Will probably look something like this ,
