Does PS support named inupt paramters or is these a feature only available to commandlets.

it would be nice to call the following script using -comp "computer name"

param ([string] $computer = $(throw "computer name is required"))
Write-Host $computer

You just did it

Using the Param statement at the beginning of the script.

What?

i want to run my script using PS C:\test.ps1 -comp "computer name"

using the following code does not support this
param ([string] $computer = $(throw "computer name is required"))
Write-Host $computer

Am I missing something please explain.

Thanks
Josiah

Maybe this makes more sense. How do I capture the value of -comp

Josiah

Script test.ps1
######################
param ([string] $computer = $(throw "computer name is required"))
Write-Host $computer
######################

Now call it like you want
PS C:\test.ps1 -comp "computer name"
Computer Name

Maybe I dont understand your question.

ok, i got it. It is using the name of the variable you are passing it to.

so if you have the following
param ([string] $myname = $(throw "computer name is required"))
Write-Host $myname

then you need to use myscript.ps1 -myname "myname"

or if you have 
param ([string] $myfile = $(throw "computer name is required"))
Write-Host $myfile

myscript.ps1 -myfile "myfile"

My original questions had just -comp and the variable name was $computer not $comp. This is why i was confused.

Josiah

That is correct, but positional rules still apply and you only have to type enought to be unique.

So -Comp is the same as -Computer

So you can do any of the following assume Param($computer = ...)
PS C:\test.ps1 -computer "computer name"
PS C:\test.ps1 -comp "computer name"
PS C:\test.ps1 -c "computer name"
PS C:\test.ps1 "computer name"

If when i called it using just -comp it was throwing the exception. It need to match the variable name. Or at least this is what i'm finding in my testing.

Script test.ps1
######################
param ([string] $computer = $(throw "computer name is required"))
Write-Host $computer
######################

Now call it like you want
PS C:\test.ps1 -comp "computer name"
Computer Name

THIS WILL FAIL

It appears you need to call it like this
PS C:\test.ps1 -computer "computer name"
Computer Name

Please correct if i'm wrong but this it what is happening on my end.

Josiah

Ok, that is very cool. It is working as you describe. I'm not sure why that first example failed when i ran. Otherwise i would not have posted this.

Josiah

i should probably take a break now.