Update cheatsheets

linux/btrbk

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# btrbk
+
+> A tool for creating snapshots and remote backups of btrfs subvolumes.
+> More information: <https://digint.ch/btrbk/doc/readme.html>.
+
+- Print statistics about configured subvolumes and snapshots:
+
+`sudo btrbk stats`
+
+- List configured subvolumes and snapshots:
+
+`sudo btrbk list`
+
+- Print what would happen in a run without making the displayed changes:
+
+`sudo btrbk --verbose dryrun`
+
+- Run backup routines verbosely, show progress bar:
+
+`sudo btrbk --progress --verbose run`
+
+- Only create snapshots for configured subvolumes:
+
+`sudo btrbk snapshot`