Windows: Cleanup files from WSUS which are no longer needed

Hi,

the content of an WSUS Server crows every month for several GiBytes because WSUS does held all files which has the approval state “install”.
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Powershell: Some basic XML handling with Powershell and .NET

Hi everybody,

here are some fundamentals to handle XML Files with powershell.

The following commands uses these XML File


<config description="Config file for testing">
    <system description="Document Management">
        <document authorFirstName="Kirk" authorSurname="Author1" date="20130503 01:15:43" description="Document Hammet" index="3">C:\temp\doc0001.txt</document>
        <document authorFirstName="Lars" authorSurname="Author5" date="20130503 10:05:42" description="Document Ulrich" index="4">C:\temp\doc0002.txt</document>
        <document authorFirstName="Cliff" authorSurname="Author5" date="20130612 11:54:33" description="Document Burton"  index="6">C:\temp\doc0051.txt</document>
        <document authorFirstName="Jason" authorSurname="Author2" date="20130806 04:02:41" description="Document Newsted"  index="1">C:\temp\doc0041.txt</document>
        <document authorFirstName="Robert" authorSurname="Smith" date="20131202 07:12:03" description="Document Trujillo"  index="2">C:\temp\doc0012.txt</document>
        <document authorFirstName="James" authorSurname="Smith" date="20130211 09:05:59" description="Document Hetfield"  index="5">C:\temp\doc0003.txt</document>
    </system>
</config>

Creating  a XML File, create a document root, create subelements, add and set attributes, save the file

# Create a new XML File with config root node
[System.XML.XMLDocument]$oXMLDocument=New-Object System.XML.XMLDocument
# New Node
[System.XML.XMLElement]$oXMLRoot=$oXMLDocument.CreateElement("config")
# Append as child to an existing node
$oXMLDocument.appendChild($oXMLRoot)
# Add a Attribute
$oXMLRoot.SetAttribute("description","Config file for testing")
[System.XML.XMLElement]$oXMLSystem=$oXMLRoot.appendChild($oXMLDocument.CreateElement("system"))
$oXMLSystem.SetAttribute("description","Document Management")
# Save File
$oXMLDocument.Save("c:\temp\config.xml")

Loading an existing XML File, read an element, do some XPATH queries

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