btrfs:tldr:4bb21

The command "sudo btrfs quota enable ${path-to-subvolume}" is used to enable quota management on a btrfs filesystem subvolume.

Here's a breakdown of the command:

• "sudo" is a command that allows you to run subsequent commands with administrative privileges.
• "btrfs" is the command-line tool for managing btrfs filesystems.
• "quota" is a subcommand of "btrfs" used for enabling or managing quotas on a btrfs filesystem.
• "enable" is the specific action to enable quota management on the specified subvolume.
• "${path-to-subvolume}" is a placeholder that should be replaced with the actual path to the subvolume on which you want to enable quotas. The path should be absolute, starting from the root of the filesystem.

By running this command, you enable quota management on the specified subvolume, allowing you to track and limit the disk space usage of files and directories within that subvolume. This can be useful for managing storage space and controlling resource allocation in a btrfs filesystem.