Clone or backup SD Card

Hallo!

I have Ubuntu server and nextcloud installed. It works.
Now i want to clone SD card or backup it, that i have a second.
I found no tool that can do this. On SD card is very especialy partitions.
Thank you

Hello.

The repo https://github.com/akgnah/rockpi-toolkit might be useful. If it doesn’t work, please add an issue
.