error

Get-Process -Name doesnotexist
Write-Host -Object ('The last error that occurred was: {0}' -f $error[0].Exception.Message)

Contains an array of error objects that represent the most recent errors. The most recent error is the first error object in the array ($Error[0]).

To prevent an error from being added to the $Error array, use the ErrorAction common parameter with a value of Ignore. For more information, see about_CommonParameters (http://go.microsoft.com/fwlink/?LinkID=113216).