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combining similar objects

 
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combining similar objects - 8/26/2008 12:00:33 PM   
bziegler

 

Posts: 5
Score: 0
Joined: 8/26/2008
Status: offline 		Is there a way to combine 2 similar objects (ex. output from get-wmiobject for different servers) without forcing it into a simple array with strings?  I would like to keep the object structure if possible.

Thanks
Post #: 1
RE: combining similar objects - 8/26/2008 11:35:43 PM   
martylist

 

Posts: 41
Score: 0
Joined: 6/10/2005
From: Colorado, USA
Status: offline 		What do you mean by "combine 2 similar objects", explain how you want them combined.  Do you want an array of objects rather than an array of strings?  Can you provide an example of what you would like to happen, even if it's just pseudocode?

(in reply to bziegler)
Post #: 2
RE: combining similar objects - 8/27/2008 9:33:59 AM   
SAPIENScripter

 

Posts: 100
Score: 0
Joined: 5/15/2007
From: SAPIEN Technologies
Status: offline 		You can always create a custom object.  Are you after something like this? 
$computer=$env:computername
       
       $os=Get-WmiObject win32_operatingsystem -computername $computer
       $sys=Get-WmiObject win32_computersystem -computername $computer
       
       [datetime]$lastboot=$os.convertToDateTime($os.LastbootUpTime)
       
       $obj=New-Object PSObject
       
       $obj | Add-Member -MemberType "Noteproperty" -name "Computer" -value $sys.caption
       $obj | Add-Member -MemberType "Noteproperty" -name "OS" -value $os.Caption
       $obj | Add-Member -MemberType "Noteproperty" -name "ServicePack" -value $os.csdversion
       $obj | Add-Member -MemberType "Noteproperty" -name "Mfg" -value $sys.manufacturer
       $obj | Add-Member -MemberType "Noteproperty" -name "Model" -value $sys.model
       $obj | Add-Member -MemberType "Noteproperty" -name "LastBoot" -value $lastboot
               
       write $obj 



_____________________________

Jeffery Hicks
Microsoft MVP - Windows PowerShell
http://blog.SAPIEN.com
coming soon: Managing Active Directory with Windows PowerShell: TFM
followme: http://www.twitter.com/jeffHicks

(in reply to bziegler)
Post #: 3
RE: combining similar objects - 8/27/2008 11:08:46 AM   
bziegler

 

Posts: 5
Score: 0
Joined: 8/26/2008
Status: offline
Basically, I want to get to get a compilation of calls to different servers.  I want to be able to treat them as 1 object and not multiple objects.  So yes, I want an array of objects.

$pgmProcesses_total=""
$pgmProcesses1=""
$pgmProcesses2=""
...
$pgmProcesses1=get-WmiObject -computer DEVBOX01 -class Win32_Process -filter "name like `'asn%`'" | select-object -property name, commandLine

if ( $pgmProcesses_total = $null) {
    $pgmProcesses_total = $pgmProcesses1
} else {
    $pgmProcesses_total = $pgmProcesses_total + $pgmProcesses1
}

$pgmProcesses2=get-WmiObject -computer DEVBOX02 -class Win32_Process -filter "name like `'asn%`'" | select-object -property name, commandLine
 
$pgmProcesses_total = $pgmProcesses_total + $pgmProcesses2

The result would be an array, $pgmProcesses_total that had all the objects from both WMI calls, and also any previous calls to retrieve a name and command line.
 
The previous code results in the following error:
Method invocation failed because [System.Management.Automation.PSObject] doesn't contain a method named 'op_Addition'.
At line 12, position 44
$pgmProcesses_total = $pgmProcesses_total + $pgmProcesses2
 
Thanks for any help.

(in reply to SAPIENScripter)
Post #: 4
RE: combining similar objects - 8/27/2008 11:41:53 AM   
SAPIENScripter

 

Posts: 100
Score: 0
Joined: 5/15/2007
From: SAPIEN Technologies
Status: offline 		Now I have a better understanding. You could still use my custom object approach but this more along the lines of what you already have.  You need to define $pgmProcesses_total as an array:

$pgmProcesses_total=@()

Then run your WMI Query:
$data=get-WmiObject -computer DEVBOX02 -class Win32_Process -filter "name like `'asn%`'" | select-object -property name, commandLine ,CSName

I added CSName to give you the server name. Finally, add $data to the array:

$pgmProcesses_total+=$data

When finished, look at $data and I think it will have what you want.  There are also more elegant ways to do this for a list of computers but I don't want to take away all your fun.



_____________________________

Jeffery Hicks
Microsoft MVP - Windows PowerShell
http://blog.SAPIEN.com
coming soon: Managing Active Directory with Windows PowerShell: TFM
followme: http://www.twitter.com/jeffHicks

(in reply to bziegler)
Post #: 5
RE: combining similar objects - 8/27/2008 12:29:28 PM   
bziegler

 

Posts: 5
Score: 0
Joined: 8/26/2008
Status: offline 		Thanks Jeffery, for the solution.  I don't want to impose upon you but since I'm new to Powershell, I would be happy to learn of more elegant ways to retrieve data against multiple servers (if you have time).  I'm sure that the knowlege would be valuable to other newbies too.

(in reply to SAPIENScripter)
Post #: 6
RE: combining similar objects - 8/27/2008 12:40:19 PM   
SAPIENScripter

 

Posts: 100
Score: 0
Joined: 5/15/2007
From: SAPIEN Technologies
Status: offline 		Since you asked nicely here's a more complete solution:

$pgmProcesses_total=@()

Get-Content c:\test\servers.txt | foreach {
$pgmProcesses_total+= (Get-WmiObject -computer $_ -class Win32_Process -filter "name like `'asn%`'" |
Select-Object -property name, commandLine ,CSName)
}

$pgmProcesses_total

_____________________________

Jeffery Hicks
Microsoft MVP - Windows PowerShell
http://blog.SAPIEN.com
coming soon: Managing Active Directory with Windows PowerShell: TFM
followme: http://www.twitter.com/jeffHicks

(in reply to bziegler)
Post #: 7
RE: combining similar objects - 8/27/2008 6:05:31 PM   
bziegler

 

Posts: 5
Score: 0
Joined: 8/26/2008
Status: offline 		Thanks, it works great now.

(in reply to SAPIENScripter)
Post #: 8
RE: combining similar objects - 8/28/2008 4:58:58 PM   
bziegler

 

Posts: 5
Score: 0
Joined: 8/26/2008
Status: offline 		FYI:  I did find one piece of unexpected behavior in the code.  If it finds no processes for a particular server, the count of $pgmProcesses_total will still increase by one.  I got around this by assigning the WMI object to a temporary array and check it for any values before concatenating the array with $pgmProcesses_total.  The problem was with +=.

(in reply to bziegler)
Post #: 9
RE: combining similar objects - 9/3/2008 8:54:30 AM   
SAPIENScripter

 

Posts: 100
Score: 0
Joined: 5/15/2007
From: SAPIEN Technologies
Status: offline 		That's because the WMI expression is completing successfully even though no processes were found. Even though you can get a lot done with PowerShell in only a few lines, that's only true if you want to forego error handling and situations like these.

_____________________________

Jeffery Hicks
Microsoft MVP - Windows PowerShell
http://blog.SAPIEN.com
coming soon: Managing Active Directory with Windows PowerShell: TFM
followme: http://www.twitter.com/jeffHicks

(in reply to bziegler)
Post #: 10
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