pvdisplay:tldr:4834d

The command "sudo pvdisplay ${-dev-sdXY}" is used to display detailed information about a physical volume in Linux using the physical volume name as an argument.

Here's a breakdown of the command:

• "sudo" is a command used to execute subsequent commands as a superuser or root, granting administrative privileges. This is often necessary when working with system-wide configurations or accessing certain files.
• "pvdisplay" is a command used to display detailed information about physical volumes, which are usually used as the building blocks of logical volumes in logical volume management (LVM) setups.
• "${-dev-sdXY}" is a placeholder for the physical volume name, where you need to substitute the actual name of the physical volume. The convention "/dev/sdXY" is typically used to represent a specific block device, where "sdX" refers to a specific storage device (e.g., sda, sdb) and "Y" represents a partition number (e.g., 1, 2).

To use this command, you would replace "${-dev-sdXY}" with the actual physical volume name you want to display information about. For example, if you want to display information about the physical volume "/dev/sda2", the command would be:

sudo pvdisplay /dev/sda2