I have an array of computer names, $computers, that are in a FQDN format. I want to trim all characters to the right of the first period and including the period.
Ex: server-01.mydomain.int = server-01
This is what I tried but it errors out.
$computers = Get-VM | Select Name
$computers = $computers.Substring(0, $computers.IndexOf('.'))
$computers
When you do |Select Name, PowerShell returns an object with a Name property, rather than only the value of each Name property of the input objects.
You could change it to Select -ExpandProperty Name and then iterate over each item in the array for the actual substring operation using a loop or ForEach-Object - although we can skip the first step completely:
$computers = Get-VM |ForEach-Object { $_.Name.Substring(0, $_.Name.Indexof('.')) }
Name property in the second function call, updated nowOr another way.
$computers = Get-VM | ForEach-Object { ($_.Name -split ".")[0] }
Since you are always selecting the first string before the first "." you can just split at the dot and select the first element in the resulting array.
