Powershell: Different output while using pipeline and object

Question

get-service| get-member #gives output.

While

$a= get-service 
get-member $a # generates error 
"get-member : No object has been specified to the get-member cmdlet.
At line:1 char:1
+ get-member $a
+ ~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [Get-Member], InvalidOperationException
    + FullyQualifiedErrorId : NoObjectInGetMember,Microsoft.PowerShell.Commands.GetMemberCommand"

Why so??

Shay Levy · Accepted Answer · 2013-06-18 08:22:08Z

3

get-service| get-member sends each service object, one at a time, to the Get-Member cmdlet, Each object is bound to the InputObject parameter (ByValue) and is processed accordingly.

When you do get-member $a you are passing $a to the first position parameter which is the Name parameter, not to the InputObject parameter. In order to get the members of $a (the collection itself):

Get-Member -InputObject $a

answered Jun 18, 2013 at 8:22

Shay Levy

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4 Comments

user1755746 Over a year ago

Thanks shay. As you mention $a would return the collection of object. How can I get type of individual object and not the collection when using with Get-Member??

Shay Levy Over a year ago

Pipe it to the Get-Member cmdlet

Shay Levy Over a year ago

By the way, $a[0].GetType().FullName would get you the type name of the first object in the collection

user1755746 Over a year ago

Thanks very much for the prompt reply.

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