Wednesday, June 3, 2009

PowerShell Formatting Error

I was looking throught the PowerGUI forum yesterday when I saw a post similar to this:
$processes = Get-Process -name m*
$drives = Get-Wmiobject `
-class win32_logicaldisk `
-Filter "DriveType=3"

$driveinfo | Format-Table -autosize

When you run this code in an editor, you are likely to get the following error:
out-lineoutput : Object of type "Microsoft.PowerShell.Commands.Internal.Format.FormatStartData" is not legal or not in the correct sequence. This is likely caused by a user-specified "format-tabl e" command which is conflicting with the default formatting.

After a few minutes of research, I see that this has been registered on Microsoft Connect as a bug. A quick, easy fix is to pass the $processes object down the pipline to Out-Default. ( $processes | Out-Default )

Hope this helps!

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