Log off users remotely - powershell

Question

found this script to log off a single username
$scriptBlock = {
$ErrorActionPreference = 'Stop'
try {
## Find all sessions matching the specified username
$sessions = quser | Where-Object {$_ -match 'username'}
## Parse the session IDs from the output
#foreach($sessionsUser in $sessions){
$sessionIds = ($sessions -split ' +')[2]
Write-Host "Found $(#($sessionIds).Count) user login(s) on computer."
## Loop through each session ID and pass each to the logoff command
$sessionIds | ForEach-Object {
Write-Host "Logging off session id [$($_)]..."
logoff $_
}
#}
} catch {
if ($_.Exception.Message -match 'No user exists') {
Write-Host "The user is not logged in."
} else {
throw $_.Exception.Message
}
}
}
## Run the scriptblock's code on the remote computer
Invoke-Command -ComputerName NAME -ScriptBlock $scriptBlock
Is it possible to do the same for all users logged in session ?
I know that -match return first parameter , i tried to do " -ne $Null" but it returns a whole column with sessions instead a row and only check row [0] and the ones with actuall parameters ...

Answer 1

Iterate through the collection and logoff all the Id present:
$ScriptBlock = {
$Sessions = quser /server:$Computer 2>&1 | Select-Object -Skip 1 | ForEach-Object {
$CurrentLine = $_.Trim() -Replace '\s+',' ' -Split '\s'
# If session is disconnected different fields will be selected
If ($CurrentLine[2] -eq 'Disc') {
[pscustomobject]#{
UserName = $CurrentLine[0];
Id = $CurrentLine[1]
}
}
Else {
[pscustomobject]#{
UserName = $CurrentLine[0];
Id = $CurrentLine[2]
}
}
}
$Sessions | ForEach-Object {
logoff $_.Id
}
}
Invoke-Command -ComputerName gmwin10test -ScriptBlock $ScriptBlock

Answer 2

Instead of
$sessions = quser | Where-Object {$_ -match 'username'}
## Parse the session IDs from the output
#foreach($sessionsUser in $sessions){
$sessionIds = ($sessions -split ' +')[2]
use:
$sessionIDs = #()
$sessions = (quser) -split '`r`n'
for ($i=1;$i -lt $sessions.length;$i++){
$sessionIDs += $sessions[$i].substring(42,4).trim()
}
This way all sessions are recorded and the IDs are added to the $sessionIDs-array.
I'm using substring since the regex is not working if the session is disconnected. Also using forinstead of foreach since the first entry is the header ("ID").