How to handle missing parameters ...

PowerShell Help
1

Hi… I have an Office365 password reset script that takes up to three parameters.
A mandatory userprincipalname, ie. "myron.kapoodle@project.com
An optional alternate email address i.e. mkapoodle@gmail.com
An optional ticket number of the support ticket.

Usually at the PS command line, I can type:

PS> ./reset-password myron.kapoodle@project.com mkapoodle@gmail.com 3840

But sometimes I don’t have the alternate eMail address. I’d like to be able to supply the UPN and the ticket ID only, thereby sliding the ticketID which is usually the third parameter into “second place”.

PS>./reset-password myron.kapoodle@project.com 3840

Or sometimes I don’t have the ticket ID either.
Is there a way to deal with all three possibilities while avoiding named parameters?
If possible I’d like to avoid having to type.

./reset-password -UPN myron.kapoodle@project.com -alternate mkapoodle@gmail.com -ticketID 3894

Here is how I’m handling it now. I can either supply all three parameters, or just the one,
and if I just have the one I go and manually clean up the ticket.

[Cmdletbinding()]
param (
    [Parameter(Position=0, mandatory=$True, ValueFromPipeline=$True)]
    [string] $UpName,
    [Parameter(Position=1, ValueFromPipeline=$True)]
    [string] $PrivateEMail,
    [Parameter(Position=3, ValueFromPipeline=$True)]
    [string] $FDTicketID)
2

May I ask what the problem is with providing named parameters?

3

Well, I’m trying to avoid typing them. I wasn’t sure if it was possible to have “shifting positional parameters”. (I just made that up).

Or maybe multiple parameter sets which account for the three different possibilities?

— L