Delete a set of files

I just posted a similar question. I need a script which deletes all files EXCEPT those whose names are included in a text file (e.g. nodelete.txt). I would be very grateful if someone could help me with this.
RothbardAsked:
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Vitor MontalvãoMSSQL Senior EngineerCommented:
Powershell solution:
 $files2Exclude=Get-Content .\nodelete.txt : Remove-Item * -Exclude $files2Exclude

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David Johnson, CD, MVPOwnerCommented:
not as elegant
---
@echo off
set source=C:\30092014
for /f "Tokens=* Delims=" %%x in (list.txt) do copy %%x %temp%
del %source%\* /q
for /f "Tokens=* Delims=" %%x in (list.txt) do copy %temp%\%%x %temp% %source%
---
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Vitor MontalvãoMSSQL Senior EngineerCommented:
Sorry, wrong commands separator. Here it is:
 $files2Exclude=Get-Content .\nodelete.txt; Remove-Item * -Exclude $files2Exclude

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Haris DulicCommented:
Better late then never ;)

@echo off
set source=C:\30092014

for /f "tokens=*" %%G in ('dir /b /a-d "%source%\*"') do (call :del_proc "%%G")
GOTO :eof
:del_proc
findstr -sip %1 list.txt > NULL
IF  ERRORLEVEL 1  del %1

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RothbardAuthor Commented:
Thanks but it doesn't seem to work. I get the following error message:

Get-Content : A positional parameter cannot be found that accepts argument ':'.
At line:1 char:27
+ $files2Exclude=Get-Content <<<<  .\nodelete.txt : Remove-Item * -Exclude $files2Exclude
    + CategoryInfo          : InvalidArgument: (:) [Get-Content], ParameterBindingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.GetContentCommand
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Vitor MontalvãoMSSQL Senior EngineerCommented:
You need to give full path to the file or run it in the folder where's that file.
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RothbardAuthor Commented:
Thanks!
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David Johnson, CD, MVPOwnerCommented:
The easier you make the code to read the better off you are down the road when you look at the code a year or so from now.  Comments are always good
 $files2Exclude=Get-Content .\nodelete.txt
 Remove-Item * -Exclude $files2Exclude

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$files2exclude = Read-Host "Please Enter the Path and File name of the Files to Exclude List"
if ((test-path $filestoexclude) -eq $false ) 
    {
    $output = $files2exclude + "Does Not Exist!"
        Write-output $output
     }
else {
    $filepath = read-host "Please Enter the Path of the files to delete"
    if ((test-path $filepath) -eq $false ) {
         $output = $filespath + "Does Not Exist"
         Write-output $output
         }
    else {
     #
     #assumes that you are on the same drive
     #
     cd $filepath
     Remove-Item * -Exclude $files2exclude
     }
}       

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