vboxmanage:tldr:5088a

This command is used to install a VirtualBox extension pack on your system, replacing any existing extension pack with the same name.

Here is the breakdown of the command:

• VBoxManage is the command-line tool provided by VirtualBox to manage virtual machines and their configurations.
• extpack is a subcommand of VBoxManage specifically used for managing extension packs.
• install is an option for the extpack subcommand, indicating that you want to install an extension pack.
• --replace is another option for the extpack subcommand, specifying that if an extension pack with the same name already exists, it should be replaced.
• ${VboxExtensionPackFileName} is a placeholder for the actual file name of the extension pack you want to install. You need to replace it with the appropriate file name.

To use this command, you would need to have VirtualBox installed on your system and run it from the command-line, replacing ${VboxExtensionPackFileName} with the actual file name of the extension pack you want to install.