Syntax: WBADMIN GET ITEMS -version: -backupTarget:{ | } -machine: Description: Lists the items included in a specific backup. ...

Syntax: WBADMIN GET ITEMS 
    -version: 
    [-backupTarget:{ | }]
    [-machine:]

Description:  Lists the items included in a specific backup.
To use this command, you must be a member of the Backup Operators group 
or Administrators group. 

Parameters:
-version       Specifies the version of the backup in MM/DD/YYYY-HH:MM format.
                If you do not know the version information, type WBADMIN GET 
                VERSIONS.

-backupTarget  Specifies the storage location that contains the backups for 
                which you want the details. The storage location can be a 
                locally attached disk drive or a remote shared folder. If 
                WBADMIN GET VERSIONS is run on the same server where the 
                backup was created, this parameter is not needed. However, 
                this parameter is required to get information about a backup 
                created from another server.

-machine       Specifies the name of the computer that you want the backup 
                details for. Useful when multiple computers have been backed
                up to the same location. Should be used when -backupTarget is 
                specified.

Examples: 
WBADMIN GET ITEMS -version:03/31/2005-09:00
WBADMIN GET ITEMS -version:04/30/2005-09:00 -backupTarget:\\servername\share 
-machine:server01