Create a /dev/btrfs-control control device when mknod is not installed

Try to recover a damaged btrfs filesystem.
More information: <https://btrfs.readthedocs.io/en/latest/btrfs-rescue.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

sudo btrfs rescue create-control-device

click the source code to copy install btrfs rescue on any operating system with command-not-found.com