将变量传递给PowerShell

Question

I'm trying to pass a variable to this command in PowerShell

Start-Process $devconloc -ArgumentList "\disable" '"'$GPUList[1]'"' -ErrorAction Stop

$GPUList[0] is a hardware ID and needs to be passed to devcon.exe in quotes:

"PCI\VEN_10DE&DEV_1CBB&SUBSYS_087D1028&REV_A1\4&44A1B07&0&0008"

But I get the following error

Start-Process : A positional parameter cannot be found that accepts argument '"'.

Any ideas what is happening?

Answer 1

Like the others allready pointed out in the comments, there are two problems here:

1. You should pass a string-array to -ArgumentList . You do this by seperating you arguments with a , . Not a whitespace.

2. To fill in the object $GPUList[1] correct with your " around the string, there are two ways to fill the string with object:

   1. Escaping the " in the string with ` and phrasing the variables in () to make sure the array position will be taken in notice : -ArgumentList '\\disable', `"$($GPUList[1])`"

   2. Filling in the variable with a position reference: -ArgumentList 'disable', ('"{0}"' -f $GPUList[1])