CODEWITHSUNDEEP
powershell
Daniel Ben Eliyahu
Daniel Ben Eliyahu

Reputation: 11

Get-Command with parameters

I am trying to use the Get-Service command or Get-Process command but I wanna try use a parameter with the "get" command. I am getting and error with this:

$a = Service
$b = Running

Get-$a | where {$_.Status -eq $b}

this part is not working, either when I use this:

powershell -Command Get-$a

this one works, how can I complete with both of the parameters.

Upvotes: 1

Views: 157

Answers (1)

Mathias R. Jessen
Mathias R. Jessen

Reputation: 174690

When you issue the command Service, and powershell is unable to find a command by that name, it'll automatically try to resolve the command name with Get- prepended - so $a already contains the results from executing Get-Service.

Now, if you want to execute a command based on its name stored in a variable, you can use the call operator (&):

$a = "Service" # notice that we're defining a string
$b = "Running" # otherwise powershell would think it should execute a command right away

& "Get-$a" |Where-Object { $_.State -eq $b }

As Mike Shepard points out, you can also execute a command by getting the corresponding CommandInfo object from Get-Command:

$cmd = Get-Command "Get-$a"
& $cmd |Where-Object { $_.State -eq $b }

Upvotes: 1

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