Powershell - Check if one or both Services are running - windows

Question

I need to check for running Services on different Windows Servers.
there can be two services running (old or new version or both, with slightly different names)
need the output like: "new version" , "old version" or "both versions"
I wanted to simply check with the Get-Process command but I can't really get to a conclusion how to get my output and how to check if both are running.
Started like the following: how can I finish my script? or am I completely wrong? couldn't find anything that helps.
if (Get-Service "NAME" -ErrorAction SilentlyContinue | Where-Object {$_.Status -eq "Running"})
{Write-Host "New Client running"
}
if (Get-Service "NAME_old" -ErrorAction SilentlyContinue | Where-Object {$_.Status -eq "Running"})
{Write-Host "old Client running"
}
Else {Write-Host ”No Client found”}
obviously this script doesn't quite work. tested on a Server where only the new client is running and it outputs:
New Client running
No Client found

Answer 1

Change the second if statement to elseif - this way the else block only runs if neither of the two preceding conditions hold true:
if (Get-Service "NAME" -ErrorAction SilentlyContinue | Where-Object {$_.Status -eq "Running"})
{
Write-Host "New Client running"
}
elseif (Get-Service "NAME_old" -ErrorAction SilentlyContinue | Where-Object {$_.Status -eq "Running"})
{
Write-Host "old Client running"
}
else {
Write-Host "No Client found"
}

Answer 2

You can do this with your three if statements if you track your Get-Service results:
if ($newclient = Get-Service "NAME" -ErrorAction SilentlyContinue | Where Status -eq Running) {
Write-Host 'New Client running'
}
if ($oldclient = Get-Service "NAME_old" -ErrorAction SilentlyContinue | Where Status -eq Running) {
Write-Host 'old Client running'
}
if (-not ($newclient -or $oldclient)) {
Write-Host 'No Client found'
}

Answer 3

Slightly different approach :
"name1", "name2" | Get-Service | foreach-object {
write-host $_.name $_.status
}
Of course depends on logic required after

Answer 4

if you are interested in a little more scalable solution, I would suggest following:
I used $appsRunning to increment each time the script find a running service, so if you are interested in a total count of running services (from the $services list) you could use that variable.
$services = #(
[pscustomobject]#{ Name = "NAME"; Description = "New App" },
[pscustomobject]#{ Name = "NAME_old"; Description = "Old App" }
)
$appsRunning = 0
foreach ($service in $services) {
$app = Get-Service $service.Name
if ($app.status -eq "Running"){
write-host $service.Description is $app.status
$appsRunning++
}
}
if ($appsRunning -eq 0) {
Write-Host "No app Running"