<wpkg><package id="acrobat8" name="Acrobat Reader 8.1.2" revision="812" reboot="false" priority="10">
		<check type="uninstall" condition="exists" path="Adobe Reader 8.1.2 - Deutsch"/>
		<install cmd="msiexec /q /i &quot;%SOFTWARE%\pkg\adobe\AcroRead.msi&quot; allusers=1">
			<exit code="0"/>
		</install>
		<remove cmd="MsiExec.exe /q /x{AC76BA86-7AD7-1031-7B44-A70500000002}"/>
		<upgrade cmd="msiexec /q /i &quot;%SOFTWARE%\pkg\adobe\AcroRead.msi&quot; allusers=1">
			<exit code="0"/>
			<exit code="3010"/>
		</upgrade>
	</package>
	<package id="ReportViewer" name="Microsoft Report Viewer Redistributable 2008" revision="2" reboot="false" priority="10">
		<check type="uninstall" condition="exists" path="Microsoft Report Viewer Redistributable 2008"/>
		<install cmd="%SOFTWARE%\pkg\wsus\ReportViewer.exe /q">
			<exit code="0"/>
		</install>
		<remove cmd="%SOFTWARE%\pkg\wsus\ReportViewer.exe /qu"/>
	</package>
<package id="pdfcreator" name="PDFCreator" revision="091" priority="0" reboot="false">
		<check type="uninstall" condition="exists" path="PDFCreator"/>
		<install cmd="msiexec /qb /i &quot;%SOFTWARE%\pkg\pdfcreator\PDFCreator-0_9_1_AFPLGhostscript_32bit.msi&quot;"/>
		<install cmd="rundll32 printui.dll,PrintUIEntry /q /ga pdfcreator"/>
		<remove cmd="MsiExec.exe /q /x{0001B4FD-9EA3-4D90-A79E-FD14BA3AB01D}"/>
		<upgrade cmd=""/>
	</package>

....

<package id="ReportViewer" name="Microsoft Report Viewer Redistributable 2008" revision="2" reboot="false" priority="10">
		<check type="uninstall" condition="exists" path="Microsoft Report Viewer Redistributable 2008"/>
		<install cmd="%SOFTWARE%\pkg\wsus\ReportViewer.exe /q">
			<exit code="0"/>
		</install>
		<remove cmd="%SOFTWARE%\pkg\wsus\ReportViewer.exe /qu"/>
	</package>

#!/usr/bin/perl -w

open(INFILE, "</test.xml") or die "Can't open input.txt: $!";
open(OUTFILE, ">output.txt") or die "Can't open output.txt: $!";

my $string = do { local $/; <INFILE> };
my $text = $string;
#print $string;
$text =~ s/(<package id="ReportViewer" name="M.*<\/package>)//ms;
#print $text;
print $&;
print OUTFILE $text;
close INFILE;
close OUTFILE;