April One-Liner
Here’s another way to get disk utilization using your PSDrives. This is a one line command. I’ve broken it up with the line continuation character. This only works locally, only queries PSDrives using the FileSystem provider and that
have a value for the Used property.
Get-PSDrive -PSProvider filesystem | where {$_.used} |
select Root,@{name="Size(GB)";expression={($_.used+$_.free)/1GB -as [int]}},`
@{name="Used(GB)";expression={"{0:F2}" -f ($_.used/1GB)}},`
@{name="Free(GB)";expression={"{0:F2}" -f ($_.free/1GB)}},`
@{name="PercentFree";expression={"{0:P2}" -f ($_.free/($_.used+$_.free))}}
The only thing I’ve done is customize the output to show utilization sizes in GB and calculate a PercentFree value. The expression returns information like this:
Root : C:\
Size(GB) : 75
Used(GB) : 66.80
Free(GB) : 7.73
PercentFree : 10.37 %
Root : F:\
Size(GB) : 75
Used(GB) : 7.53
Free(GB) : 67.00
PercentFree : 89.90 %
You could also pipe this expression to Format-Table to make a nicer looking report.
Download the oneliner here.
UPDATE: Since I originally posted this I realized I made a grievous error. This oneliner likely won’t work for you, and definitely not on PowerShell v1.0. I normally test on all versions but missed something this month. My apologies. Here is a comparable expression that uses WMI to achieve the same results.
- get-wmiobject win32_logicaldisk -filter "size > 0" |
- select DeviceID,@{name="Size(GB)";expression={($_.size)/1GB -as [int]}},`
- @{name="Used(GB)";expression={
- "{0:F2}" -f ((((($_.size/1mb) – ($_.freespace/1mb))*1mb)/1gb))}},`
- @{name="Free(GB)";expression={"{0:F2}" -f ($_.freespace/1GB)}},`
- @{name="PercentFree";expression={"{0:P2}" -f ($_.freespace/$_.size)}}
![[del.icio.us]](http://images.del.icio.us/static/img/delicious.small.gif){kind=small}
Tags: powershell, PSDrive
April 2nd, 2009 at 7:12 am
Big time mea culpa. This will only work with PowerShell v2.0 CTP3. I try to make sure I test on both PowerShell v1 and v2,but I obviously missed that important step. Again, my apologies.
April 2nd, 2009 at 7:19 am
Here’s a WMI expression that should work in PowerShell v1 to give you essentially the same result:
get-wmiobject win32_logicaldisk -filter “size > 0″ |
select DeviceID,@{name=”Size(GB)”;expression={($_.size)/1GB -as [int]}},`
@{name=”Used(GB)”;expression={“{0:F2}” -f (($_.size – $_.freespace)/1GB)}},`
@{name=”Free(GB)”;expression={“{0:F2}” -f ($_.freespace/1GB)}},`
@{name=”PercentFree”;expression={“{0:P2}” -f ($_.freespace/$_.size)}}
April 2nd, 2009 at 7:42 am
I just can’t catch a break today. In PowerShell v1.0 the size and freespace values are of the type [int64], which doesn’t support subtraction. There’s probably an ugly hack I’ll have to find.
April 2nd, 2009 at 8:24 am
This works in PowerShell v1.0. The size and freespace properties are [int64] so I have to put the numbers through some hoops.
get-wmiobject win32_logicaldisk -filter “size > 0″ |
select DeviceID,@{name=”Size(GB)”;expression={($_.size)/1GB -as [int]}},`
@{name=”Used(GB)”;expression={
“{0:F2}” -f ((((($_.size/1mb) – ($_.freespace/1mb))*1mb)/1gb))}},`
@{name=”Free(GB)”;expression={“{0:F2}” -f ($_.freespace/1GB)}},`
@{name=”PercentFree”;expression={“{0:P2}” -f ($_.freespace/$_.size)}}
Remember all quotes should be straight.
April 2nd, 2009 at 9:36 am
Jeff,
I can’t get this to work properly on PowerShell v2 CTP3 either. Get-Member shows none of the properties you’re using here.
April 2nd, 2009 at 9:48 am
I have a not-publicly-available later build. I have no idea where my head was when I came up with this.
April 3rd, 2009 at 6:10 am
I figured as much.
Thanks for the confirmation.