Parsing and removing text with cmd or powershell - powershell

Question

I've checked quite a few other questions here but was unable to find what I need. I am currently trying to automate the process of finding out what VMs are in what Hyper V servers. Here is my current script.
#echo off
set /P dc= "Which DC do you want? "
dsquery computer -name %DC%VUT* > dsquery.txt
type dsquery.txt | findstr /v IMAGINGOU | findstr /v OTHEROU > dsquery2.txt
powershell -command Get-Content dsquery2.txt | ForEach-Object { $_ -replace '"CN=', "" } | Set-Content dsquery3.txt
powershell -command Get-Content dsquery3.txt | ForEach-Object { $_ -replace ',OU=CAM,OU=Exchange,OU=Server,DC=RED001,DC=local"', "" } | Set-Content serverlist.txt
powershell -command .\Get-HyperVMod.ps1 -file output.csv
The problem I have hit is the servers that I can do dsquery from (Win2k3) can't do the ForEach-Object because they have an older version of Powershell and the Win2k8 servers that can do the ForEach-Object can't do a dsquery.
Here is a sample of the dsquery output that I am trying to parse and remove all but the server name.
"CN=SERVER001,OU=VUT,OU=Infastructure,OU=Server,DC=dcname,DC=local"
"CN=SERVER008,OU=ImagingWDS,DC=red002,DC=local"
Output should be
SERVER001
SERVER008
Any suggestions on either doing this with another method or just my small problem of removing the extra text from the file.

Answer 1

run this against your dsquery.txt, it will parse what you need.
#echo off
setlocal enabledelayedexpansion
::Echos your Computer Name only.
for /F "tokens=1,2 delims==," %%G IN (dsquery.txt) DO echo %%H
pause
endlocal
basically what it does is uses two different delimeters: "=" and "," which immediately surround your server names. and looks only for that second token. It works based on the strings you provided above.

Answer 2

The ForEach-Object cmdlet was introduced in PowerShell V1 so you'll have it there.
Jon's regex here shows you how you can pull the common name from a LDAP string.
This will apply the regex to each line in a text file and return the result.
Get-Content file.txt | % { $_ -replace '(CN=)(.*?),.*', '$2' }
Update
Here's how your batch script would translate into PowerShell:
$dc = Read-Host "Which DC do you want?"
& dsquery computer -name "${dc}VUT*" | % {
# Do your processing here...
$_ -replace '(CN=)(.*?),.*', '$2'
}