Trying to pull out newest errors in Log file and the create custom.txt output - powershell-4.0

Question

I am new to powershell scripting and have been tasked to create some alerts based on errors in certain logfiles. These are just logs from a bespoke application.
My current Code is
`$OutputFile3 = (Get-Location).Path + ".\Results.txt"
$Sourcefolder= "C:\Users\dewana\Documents\Test\"
$Targetfolder= "C:\Users\dewana\Documents\Test\Test3"
Get-ChildItem -Path $Sourcefolder -Recurse|
Where-Object {
$_.LastWriteTime -gt [datetime]::Now.AddMinutes(-5)
}| Copy-Item -Destination $Targetfolder
$Testing5 = Get-Content -Tail -1 -Path "C:\Users\dewana\Documents\Test\Test3\*.txt" | Where-Object
{ $_.Contains("errors") }
Remove-Item $OutputFile3
New-Item $OutputFile3 -ItemType file
try
{
$stream = [System.IO.StreamWriter] $OutputFile3
$stream.WriteLine('clientID 1111')
$stream.WriteLine('SEV 1')
$stream.WriteLine('Issue with this process')
}
finally
{
$stream.close()
}`
What i am struggling with is trying is
$Testing5 = Get-Content -Tail -1 -Path "C:\Users\dewana\Documents\Test\Test3\*.txt" | Where-Object { $_.Contains("errors") }
I am trying to store the latest string which contains the word error in the log file. i would want to use the stored string to the create an if statement to say if $Testing5 have a new value of error assigned the create a custom text file.
I can't seem to find out why the get-content is not working with the where-object

Answer 1

The only issue I can see is your Where-Object code block is on the next line.
Get-Content -Tail -1 -Path $tempfile | Where-Object
{ $_.Contains("errors") }
If you separate at the pipe it's fine.
Get-Content -Tail -1 -Path $tempfile |
Where-Object { $_.Contains("errors") }