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<#
.SYNOPSIS
Get-DiskInventory retrieves logical disk information from one or
more computers.
.DESCRIPTION
Listing 20.6 Adding verbose output to Get-DiskInventory.ps1
We add [ValidateSet(2,3)] to the script to
tell PowerShell that only two values, 2
and 3, are accepted by our -drivetype
parameter and that 3 is the default.
Licensed to Jim Martinson <jim.martinson@ridgewater.edu>
256 C HAPTER 20 Improving your parameterized script
Get-DiskInventory uses WMI to retrieve the Win32_LogicalDisk
instances from one or more computers. It displays each disk's
drive letter, free space, total size, and percentage of free
space.
.PARAMETER computername
The computer name, or names, to query. Default: Localhost.
.PARAMETER drivetype
The drive type to query. See Win32_LogicalDisk documentation
for values. 3 is a fixed disk, and is the default.
.EXAMPLE
Get-DiskInventory -ComputerName SRV02 -drivetype 3
#>
[CmdletBinding()]
param (
[Parameter(Mandatory=$True)]
[Alias('hostname')]
[string]$computername,
[ValidateSet(2,3,5)]
[int]$drivetype = 3
)
Write-Verbose "Connecting to $computername"
Write-Verbose "Looking for drive type $drivetype"
Get-CimInstance -class Win32_LogicalDisk -ComputerName $computername `
-filter "drivetype=$drivetype" |
Sort-Object -property DeviceID |
Select-Object -property DeviceID,
@{name='FreeSpace(MB)';expression={$_.FreeSpace / 1MB -as [int]}},
@{name='Size(GB)';expression={$_.Size / 1GB -as [int]}},
@{name='%Free';expression={$_.FreeSpace / $_.Size * 100 -as [int]}}
Write-Verbose "Finished running command"