Powershell: Win32_BIOS Serialnumber validity - powershell

In a system i'm making I am saving files from each computer to a directory which has the name of the serialnumber i collect from this code:
$serialnr = gwmi -computer $compname Win32_BIOS | ForEach {$_.SerialNumber}
When I run this code on my computer I get the serialnumber, however when the same code is run on a friends computer the output reads: "FFFFFFF" (I am not sure about the number of F's).
What I'm hoping is that "FFFFFFF" is like a standard output if I cannot get the true serialnumber, then I could atleast use that as a parameter for another command to make "fix".
Q: Anybody has some information about the possible outputs from this command, or possible fixes?
All ideas and all help will be greatly appreciated!

I don't understand the purpose of your ForEach. Am I missing something?
$serialnr = gwmi win32_bios | select -Expand serialnumber | out-string
will give you the serial number.

Related

get-wmiobject script not working

I am trying to write a script to pull software list down from multiple computers in one script, however most is working but one field is not pulling through anything
I have got this script below...
GET-WMIOBJECT -CLASS WIN32_PRODUCT -COMPUTER CLUKxxx,CLUKyyy,CLUKzzz | SELECT-OBJECT COMPUTERNAME, NAME, VERSION, VENDOR | SORT OBJECTNAME | EXPORT-CSV "C:\CLUKxxx_yyy_zzz_Programs.csv"
the name, version and vendor is pulling through just fine, however I cannot seem to find a way to pull through the computer name. I have tried _SERVER, COMPUTER, COMPUTERNAME, SERVER but nothing is working.
I know the script is working pulling through software from both computers as I got duplicate program names in the list (i.e. IBM Notes comes up twice).
Does anyone know how I can put the computer name in the script?
So far, COMPUTERNAME column is appearing blank.
Thanks guys.
Dan
Use the PsComputerName property of WMI objects. Change your script to -
GET-WMIOBJECT -CLASS WIN32_PRODUCT -COMPUTER CLUKxxx,CLUKyyy,CLUKzzz | SELECT-OBJECT PsCOMPUTERNAME, NAME, VERSION, VENDOR

Powershell - check if a CD is in CD-ROM drive

Is this possible?
My first guess would be something like:
C:> Get-WmiObject Win32_CDROMDrive
But when I tried this, it only tells me Caption, Drive, Manufacturer,VolumeName
No information on whether or not there is a CD in the disc drive.
You can get this information by
(Get-WMIObject -Class Win32_CDROMDrive -Property *).MediaLoaded
You can see what properties are available for that WMI class by
Get-WMIObject -Class Win32_CDROMDrive -Property * | Get-Member
and more detailed documentation from
Get-WMIHelp -Class Win32_CDROMDrive
In general, you will find that liberal use of the Get-Help, Get-Member, Get-Command, and Get-WMIHelp cmdlets will provide you with a great deal of information, and possibly eliminate the need to ask questions like this here and wait for an answer that may or may not come.

Get-WmiObject from AD OU

I have a simple problem that I can't seem to work through. I need to know what servers are still running server 2008/R2.
I know that Win32_OperatingSystem's Name property contains the information that I'm looking for. I would like to be able to run Get-WmiObject against a collection of servers in an OU.
There are two problems that I'm having:
I can't figure out how to redirect the output of Get-ADComputer to something that Get-WmiObject -ComputerName can use. I think Get-ADComputer is outputting objects of type Microsoft.ActiveDirectory.Management.ADComputer, and Get-WmiObject is looking for type System.Management.ManagementObject. Here's what I came up with but it doesn't appear to work.
Get-WmiObject Win32_OperatingSystem -ComputerName (Get-ADComputer -filter * -SearchBase "OU=Member Servers,DC=Company,DC=Com" | select #{L="ComputerName";e={$_."name"}}) -Property name, csname | select csname, name | Format-Table -AutoSize
My temp workaround: I was able to create a CSV that contains the list of server names. I was able to use the CSV to run Get-WmiObject against. However, the OU contains "dead" servers. So when I try to run Get-WmiObject using the CSV-list of servers that came from AD there are connection timeouts and PowerShell waits a period of time to see if the dead server will respond. This really slows down the operation & we are working to clean this up. Until that happens, Is there a way to only pass the server names that pass a Test-Connection to Get-WmiObject?
Get-WmiObject win32_operatingsystem -ComputerName (Get-Content C:\Users\user1\Desktop\Servers.csv) -Property name, csname | select csname, name | Format-Table -AutoSize
Pick the name component first then it will pass it to the next pipeline object (select -object)
Get-WmiObject Win32_OperatingSystem -ComputerName ((Get-ADComputer -filter * -SearchBase "OU=Member Servers,DC=Company,DC=Com").Name)
Note: -ComputerName: accepts a string object so you cannot pass a base type object directly to that.

Get-WMIObject include computer name

I'm trying out a script to go grab installed software on servers remotely. Problem is I want it to output certain attribs including the computer name but I can't seem to figure out how to get the name inserted.
Here is what I have so far...
$servers = Get-QADComputer -SearchRoot "OU=servers,OU=mydomain:-),DC=COM" | Select Name
...which works fine of course. Then...
$servers | % {Get-WMIObject -Class Win32Reg_AddREmovePrograms} | select Displayname,Version,InstallDate,PSComputerName
... which provides the full list of software installed on all servers in that OU but the PSComputerName becomes MY COMPUTER (the computer I run the query from - not the computername of the system being queried). The goal is to have the servername the software is installed on on each line item of software. I've asked professor Google and don't seem to see anything helpful (or anything that I understand anyway).
Hope this makes sense. semi-amateur PS script writer so hopefully this is easy for you guys. Thanks in advance for your help
Your command:
Get-WMIObject -Class Win32Reg_AddREmovePrograms
Does not specify computer to query, so it just query computer command being executed on. Thus PSComputerName display MY COMPUTER, as MY COMPUTER is computer being queried. You have to specify -ComputerName parameter to Get-WMIObject cmdlet to query specific computer. And -ComputerName parameter accept array of computer names, so you can put array of computer names to it instead of using ForEach-Object cmdlet and query one computer at time.
Since the object returned from the WMI call doesn't contain the computer you made the request on, you need to include it yourself from include your ForEach-Object (%) block. You could use Add-Member to add it yourself, then do your Select-Object outside like you're doing now:
$servers | % {
Get-WMIObject -Class Win32Reg_AddREmovePrograms -ComputerName $_ |
Add-Member -MemberType NoteProperty -Name ComputerName -Value $_ -PassThru
} | select Displayname,Version,InstallDate,ComputerName
Another way is to move the Select-Object to inside the block and do it within there, by creating a new property on the fly with a hashtable:
$servers | % {
Get-WMIObject -Class Win32Reg_AddREmovePrograms -computername $_ |
Select-Object Displayname,Version,InstallDate,#{Name='ComputerName';Expression={$_}}
}

Any idea why I can't seem to execute two Get-WMIObject commands in the same Scriptblock?

I'm having a hell of a time with what seems like an utterly bizarre issue. I'm basically trying to inventory a bunch of workstations via WinRM and the Invoke-Command PowerShell cmdlet, but I'm running into grief when I try to execute more than one Get-WMIObject call at a time.
In this case, I'm specifically trying to get the model and serial number of the workstations and pipe them out to a CSV, making it important that the two commands are executed in the same Scriptblock, giving me something very similar to the below, basically.
Invoke-Command -ScriptBlock { Get-WmiObject Win32_ComputerSystem | Select Model ; Get-WmiObject win32_SystemEnclosure | Select serialnumber } -ComputerName (Get-ADComputer -Server [domain I care about] -filter 'name -Like "[types of computers I care about]"' | Select-Object -expand Name)
Even when run locally, Get-WmiObject Win32_ComputerSystem | Select Model ; Get-WmiObject win32_SystemEnclosure | Select serialnumber only returns the first command. I've tried swapping them around and the first command executes, while the second does not. Some of my colleagues report that it works just fine for them, others see the same result as me, and it doesn't seem to be a version issue, as one of the people for whom this works is running the same version of PowerShell as I am. (5.0.10240.16384)
Screenshot below of a few different command combinations. Anyone have any idea what's going on here?
If you change the list in the select-object cmdlets so both include the properties output by each, you will get the result you want (I think).
Invoke-Command -ScriptBlock { Get-WmiObject Win32_ComputerSystem | Select Model,SerialNumber ; Get-WmiObject win32_SystemEnclosure | Select model,serialnumber } -ComputerName localhost
That will get you output to the screen which should include all of the info. If you just want objects you can just capture the output and see that all of the properties are there.
$objects=Invoke-Command -ScriptBlock { Get-WmiObject Win32_ComputerSystem | Select Model ; Get-WmiObject win32_SystemEnclosure | Select serialnumber } -ComputerName (Get-ADComputer -Server [domain I care about] -filter 'name -Like "[types of computers I care about]"' | Select-Object -expand Name)
If you execute $objects | format-list * you will see that you have two objects, one with a Model and one with a SerialNumber.
Outputting different objects to a single CSV is another issue altogether. You get columns in the CSV based on the properties in the first object, so you will lose the SerialNumber property in the CSV.