I'm attempting to perform actions on files created in the last month.

I'm attempting to construct a variable for the file name pattern that has the year and month as the prefix in the format: yyyyMM.

$lastmonth = ((Get-Date).AddMonths(-1))

returns

12/25/2010 3:43:19 PM

I then need to format that into:

201012

$x = Get-Date -Format "yyyyMM" results in the format I need but of course returns the current year and month:

201101

Adding the -format option on the original command:

$lastmonth = ((Get-Date).AddMonths(-1)) -format "yyyyMM"

results in the folowing error:

You must provide a value expression on the right-hand side of the '-f' operator. At :line:1 char:43 + $lastmonth = ((Get-Date).AddMonths(-1))-fo <<<< rmat "yyyyMM"

The format parameter belongs to the cmdlet, you trying to use it against the method (addMonths), try the ToString() method:

(Get-Date).AddMonths(-1).ToString('yyyyMM')

Shay. That worked great. Thanks for the quick response.