btrfs-property:tldr:3c5f6

The command you provided is used to set the compression property of a Btrfs file or directory. Here is the breakdown of the command:

• sudo is a command that allows you to execute the subsequent command with administrative privileges. It is used to perform actions as a superuser or root user.

• btrfs is a command-line tool used to manage and manipulate Btrfs file systems.

• property set is a subcommand that allows you to change the value of a specific property for a file or directory on a Btrfs file system.

• ${path-to-btrfs_inode} is a placeholder that should be replaced with the actual path to the Btrfs inode (file or directory) you want to modify. For example, /path/to/myfile or /path/to/mydir.

• compression is the name of the property you want to modify. In this case, you are changing the compression property.

• ${select} is another placeholder that should be replaced with the desired value for the compression property. The available options depend on your Btrfs setup. Some common values for ${select} are none (no compression), zlib (zlib compression), lzo (lzo compression), etc. The specific compression algorithms available may differ based on your Btrfs version and configuration.

By executing this command, with the proper values substituted, you can set the compression property of a file or directory on a Btrfs file system.