Okay it's one of those, "What's peculiar here?" kinda things.
Consider the source itself. And I certainly don't mean code of any sort. 'Why' would 'They' cite Wikipedia, as good a resource as anyone might think it to be?
Why not cite yourself? Instead of citing someone else - who will merely turn right around and cite you as the ultimate source reference?
As the saying goes, "Real BOFH use tar and rsync!"
The blog article is an excellent treatment of using tar along with SSH to effect a reliable backup plan and schedule.
Another couple of great fav GoTo solutions of mine have always been Duplicity and Duply for those not comfortable rolling their own scripts w/SSH, tar, and/or rsync :batman:
Thank you very much for sharing this @nixCraft !!!