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I have a pclist.csv file like this:

----------------------------------------------
| Name | LastLogonTimestamp | Some Other Data |
-----------------------------------------------
| 2342 | 23/05/2012         | Blah Blah Blah  |
-----------------------------------------------
| 3433 |                    | Yada Yada Yada  |
-----------------------------------------------

As you can see, some of the LastLogonTimestamp cells don't contain any data and some do.

I'm trying to examine this .csv using a powershell function like this:

$assets = import-csv pclist.csv

Function ActiveDesktop
{
foreach ($asset in $assets)
    {
    if ($asset.'LastLogonTimestamp' -le {get-date.adddays(-90) -format "ddMMyyyy"})
        {write-host $asset.Name, $asset."LastLogonTimestamp"}
    }
}

I want to see which PCs are inactive, but running the query doesn't return anything. Can anybody point me in the right direction?

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1 Answer

up vote 4 down vote accepted

Get all records with empty LastLogonTimestamp or older then 90 days:

.\Import-Csv pclist.csv | `
    ? { 
        $_.LastLogonTimestamp -eq "" -or `
        [DateTime]::Parse( $_.LastLogonTimestamp) -le [DateTime]::Today.AddDays(-90)
    }
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Works great, thanks. Just I think you accidentally left a leading space before the second $_.LastLogonTimestamp though. After removing that it worked as expected :-) –  leftcase Aug 1 '12 at 10:45
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