[[https://habr.com/ru/post/45912/|Настройка резервного копирования в Ubuntu с rsnapshot]]

https://rsnapshot.org/faq.html

https://psomas.wordpress.com/2009/07/19/rsnapshot-tipstricks/

https://rsnapshot-discuss.narkive.com/BEE9ss7l/email-in-case-of-error