Creating an Array with Headers and Columns from a string using [PSCustomObject]

Today, I was updating a script I wrote a while ago, and I wanted to streamline the processing loops once input was received.  This particular script took parameters for:

  • Identity (as an email address or UserPrincipalName)
  • CSV (with either no header or a header of UserPrincipalName)
  • Target environment type (either Active Directory or Office 365/Azure AD, which return a UserPrincipalName property with Get-ADUser or Get-AzureADUser)

I had gone the “easy” route and just done a simple If/Then to see if the Identity parameter had been passed, and if it had, run a separate chunk of code (which made troubleshooting or updates much harder since I had to keep two branches of the code synced when I made updates).… [ Continue reading ]


Testing a variable with the value of zero

Tonight, while working on my previous script, I ran into an interesting problem when testing the presence of a value.

Consider this:

PS C:\> [int]$IntValue0 = 0
PS C:\> [int]$IntValue1 = 1
PS C:\> [string]$StringValue0 = "0"
PS C:\> [string]$StringValue1 = "1"
PS C:\> $IntValue0
PS C:\> $IntValue1
PS C:\> If ($IntValue0) { "exists" }
PS C:\> If ($IntValue1) { "exists" }
PS C:\> if ($StringValue0) { "exists" }
PS C:\> if ($StringValue1) { "exists" }
PS C:\> if ($IntValue0 -eq $null) { "null" }
PS C:\> if ($IntValue0 -lt 1) {"less than 1" }
less than 1
PS C:\> $IntValue0.GetType()
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Update to Create-LabUsers tool

Update: I’ve added a shortlink for this tool:

Because you didn’t ask for it, I went ahead and added to it.

Well, that’s a lie.  I actually had some really great ideas and feedback, so I’ve added a few new features that I wanted to draw attention to:

  • Detect existing Exchange session – If you cancel the script to create mailboxes while it’s running, you previously needed to run a Remove-PSSession to close the open Exchange session. 
[ Continue reading ]