Compare part of node xml files using powershell

Question

I want to compare a part of the xml-tree of two files (GPO->Computer from a GPOReport).

$Xml1 = Get-Object $Path1
$Xml2 = Get-Object $Path2

Compare-Object ($Xml1) -DifferenceObject ($Xml2)

gives the complete differences from the file. But I want only part of the node.

What is Get-Object and what does it do?

Mathias R. Jessen
– Mathias R. Jessen

2019-07-04 13:54:44 +00:00
Commented Jul 4, 2019 at 13:54 — Mathias R. Jessen
– Mathias R. Jessen, Commented Jul 4, 2019 at 13:54
Sorry typo....I mean Get-Content

Thuurke
– Thuurke

2019-07-05 08:09:53 +00:00
Commented Jul 5, 2019 at 8:09 — Thuurke
– Thuurke, Commented Jul 5, 2019 at 8:09

Mathias R. Jessen · Accepted Answer · 2019-07-04 14:07:39Z

1

Comparing trees (ie. an XML document) is a bit more complicated than comparing two lists (like the lines in two files).

It's unclear from your question how extensive a comparison you're looking for here, but if you're only interested in testing a single value or attribute between two XML documents, the easiest is probably with Select-Xml:

$xml1 = [xml]@'
<root>
  <nodegroup>
    <node name="myNode">SomeValue</node>
  </nodegroup>
</root>
'@
$xml2 = [xml]@'
<root>
  <nodegroup>
    <node name="myNode">SomeOtherValue</node>
  </nodegroup>
</root>
'@

$res1,$res2 = $xml1,$xml2 |Select-Xml -XPath 'root/nodegroup/node[@name = "myNode"]'

if($res1.Node.InnerText -eq $res2.Node.InnerText){
    # the inner text value of the selected node is the same in both documents
}

answered Jul 4, 2019 at 14:07

Mathias R. Jessen

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1 Comment

Thuurke Over a year ago

My goal is to compare a GPO template xml <computer> and <user> with those we actualy imported at a domain. So I can check the GPO has the correct value's. Because those GPO's are imported on many domains.

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