How do I create an exclusion into query results? - powershell

Question

Forgive me for I am relatively new to PowerShell. I have an issue were we need to log off all disconnected users with the exception of one ID. I found this script which does a great job logging off the disconnected users. My question is how would I modify this section to ignore one or more specified users from the query results?
function Get-Sessions
{
$queryResults = query session
$starters = New-Object psobject -Property #{"SessionName" = 0; "UserName" = 0; "ID" = 0; "State" = 0; "Type" = 0; "Device" = 0;}
foreach ($result in $queryResults)
{
try
{
if($result.trim().substring(0, $result.trim().indexof(" ")) -eq "SESSIONNAME")
{
$starters.UserName = $result.indexof("USERNAME");
$starters.ID = $result.indexof("ID");
$starters.State = $result.indexof("STATE");
$starters.Type = $result.indexof("TYPE");
$starters.Device = $result.indexof("DEVICE");
continue;
}
New-Object psobject -Property #{
"SessionName" = $result.trim().substring(0, $result.trim().indexof(" ")).trim(">");
"Username" = $result.Substring($starters.Username, $result.IndexOf(" ", $starters.Username) - $starters.Username);
"ID" = $result.Substring($result.IndexOf(" ", $starters.Username), $starters.ID - $result.IndexOf(" ", $starters.Username) + 2).trim();
"State" = $result.Substring($starters.State, $result.IndexOf(" ", $starters.State)-$starters.State).trim();
"Type" = $result.Substring($starters.Type, $starters.Device - $starters.Type).trim();
"Device" = $result.Substring($starters.Device).trim()
}
}
catch
{
$e = $_;
Write-Log "ERROR: " + $e.PSMessageDetails
}
}
}
Thank you for any input you may have.

Answer 1

So you want to omit certain results? You are using PowerShell objects so this should be easy with Where-Object
$omissions = "user1","user2"
foreach ($result in $queryResults)
{
# Stuff inside the loop
} | Where-Object{$omissions -notcontains $_.Username}
Tack on the where-object and we use -notcontains to see if a given user is not in the array of $omissions. Which is of course a list of users.
Caveat
You might have issues with the output of that foreach construct. I have seen this in PowerShell versions earlier than 3.0. If that does happen you could just capture the New-Objects into an array to later filter or use ForEach-Object.