Remove specific xml elements using PowerShell -

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i have following xml:

<ns1:pricemaintenancerequest xmlns:ns1="http://retalix.com/r10/services" majorversion="2" minorversion="0" fixversion="0">   <ns1:header>     <ns1:messageid>1234</ns1:messageid>     <ns1:bulk unitofwork="false"/>   </ns1:header>   <ns1:productprice businessunitid="9200" action="addorupdate">     <ns1:productid>2840000133</ns1:productid>     <ns1:price action="addupdate" sequence="1234">       <ns1:unitofmeasurecode>ea</ns1:unitofmeasurecode>       <ns1:effectivedatetimestamp>2012-09-20t00:00:00</ns1:effectivedatetimestamp>       <ns1:enddatetimestamp>2056-12-12t23:59:00</ns1:enddatetimestamp>       <ns1:catalogprice currency="usd">4.2900</ns1:catalogprice>       <ns1:batchid>491364c5-73f5-45a4-8355-79cc0a720ea0</ns1:batchid>       <ns1:changestatus>na</ns1:changestatus>     </ns1:price>   </ns1:productprice>   <ns1:productprice businessunitid="90" action="addorupdate">     <ns1:productid>2840000133</ns1:productid>     <ns1:price action="addupdate" sequence="1234">       <ns1:unitofmeasurecode>ea</ns1:unitofmeasurecode>       <ns1:effectivedatetimestamp>2012-09-20t00:00:00</ns1:effectivedatetimestamp>       <ns1:enddatetimestamp>2056-12-12t23:59:00</ns1:enddatetimestamp>       <ns1:catalogprice currency="usd">4.2900</ns1:catalogprice>       <ns1:batchid>491364c5-73f5-45a4-8355-79cc0a720ea0</ns1:batchid>       <ns1:changestatus>na</ns1:changestatus>     </ns1:price>   </ns1:productprice>   <ns1:productprice businessunitid="90" action="addorupdate">     <ns1:productid>2840000133</ns1:productid>     <ns1:price action="addupdate" sequence="1234">       <ns1:unitofmeasurecode>ea</ns1:unitofmeasurecode>       <ns1:effectivedatetimestamp>2012-09-20t00:00:00</ns1:effectivedatetimestamp>       <ns1:enddatetimestamp>2056-12-12t23:59:00</ns1:enddatetimestamp>       <ns1:catalogprice currency="usd">4.2900</ns1:catalogprice>       <ns1:batchid>491364c5-73f5-45a4-8355-79cc0a720ea0</ns1:batchid>       <ns1:changestatus>na</ns1:changestatus>     </ns1:price>   </ns1:productprice> </ns1:pricemaintenancerequest>

i need remove nodes businessunitid="90". in example, end this:

<ns1:pricemaintenancerequest xmlns:ns1="http://retalix.com/r10/services" majorversion="2" minorversion="0" fixversion="0">   <ns1:header>     <ns1:messageid>1234</ns1:messageid>     <ns1:bulk unitofwork="false"/>   </ns1:header>   <ns1:productprice businessunitid="9200" action="addorupdate">     <ns1:productid>2840000133</ns1:productid>     <ns1:price action="addupdate" sequence="1234">       <ns1:unitofmeasurecode>ea</ns1:unitofmeasurecode>       <ns1:effectivedatetimestamp>2012-09-20t00:00:00</ns1:effectivedatetimestamp>       <ns1:enddatetimestamp>2056-12-12t23:59:00</ns1:enddatetimestamp>       <ns1:catalogprice currency="usd">4.2900</ns1:catalogprice>       <ns1:batchid>491364c5-73f5-45a4-8355-79cc0a720ea0</ns1:batchid>       <ns1:changestatus>na</ns1:changestatus>     </ns1:price>   </ns1:productprice> </ns1:pricemaintenancerequest>

how do powershell?
need load files containing xml directory, manipulate them, , save them.

thanks lot

you can this:

get-childitem -path "c:\folderwithxmls" -filter "*.xml" | foreach-object {      $path = $_.fullname     $xml = [xml](get-content $path)      $xml.pricemaintenancerequest.productprice | ? { $_.businessunitid -eq "90" } | % {          #remove node         $xml.pricemaintenancerequest.removechild($_)     }      $xml.save($path)  }

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