mkfs.btrfs:tldr:0334b

This command is used to create a Btrfs filesystem on a specified storage device or devices. Let's break down the different elements:

• sudo: It's a command used to run subsequent commands with administrative privileges. It allows the user to execute the following command as a superuser or administrator.

• mkfs.btrfs: This command is used to create a Btrfs filesystem. It is specific to the Btrfs file system and is responsible for initializing the file system on the specified storage device(s).

• --label "${label}": This option is used to assign a label to the newly created Btrfs filesystem. The ${label} is a placeholder that would be replaced with the actual desired label. The label serves as a human-readable identifier for the file system.

• ${-dev-sda} and [${-dev-sdN}]: These placeholders represent the storage device(s) on which the Btrfs filesystem will be created. The -dev-sda denotes the first storage device, and the -dev-sdN represents additional storage devices if desired. Replace ${-dev-sda} and [${-dev-sdN}] with the actual device names, like /dev/sda, /dev/sdb, etc.

Overall, this command allows you to create a Btrfs filesystem on one or more storage devices, with an optional label assigned to it. The system executes it with administrative privileges using sudo.