[Powershell] Delete .log file older than 1 month in a specified folder

Here is a short script that will help you to clean a folder that contains .log files that have a creation date older than one month. The function can use an argument to be verbose or not - Verbose mode write events in the Operations Manager Event Log when it's launched by SCOM.

Save this few line in a DeleteOldLogs.ps1 file.

1. param ($FolderPath, $Debug)
2. if ($debug -ne "true"){$debug = [bool]$false}else{$debug = [bool]$true}
3. $Script:API             = new-object -comObject "MOM.ScriptAPI"
4. $Script:Bag             = $Script:API.CreatePropertyBag()
5. $Script:LOG_ERROR       = 1
6. $Script:LOG_WARNING     = 2
7. $Script:LOG_INFORMATION = 4
8. $Script:ScriptName      = "DeleteOldLogs.ps1"
9. $Script:Arguments       = "Received Arguments:`FolderPath = $FolderPath `rDebug = $debug"
11. function Write-DebugInfo([string] $msg)
12. {
13.     if ($debug)
14.     {
15.         $Script:API.LogScriptEvent("$ScriptName",100,$Script:LOG_INFORMATION,"`r$Arguments`r`r$msg")
16.     }
17. }
19. function Write-ErrorInfo([string] $msg)
20. {
21.     $Script:API.LogScriptEvent("$ScriptName",500,$Script:LOG_ERROR,"`r$Arguments`r`r$msg")
22. }
24. $date= (get-date).AddMonths(-1)
25. $Files = get-childitem -Path $FolderPath -include *.log -recurse | Where-Object {$_.CreationTime -lt $date}
26. foreach ($File in $Files)
27. {
28.  if ($File) {
29.  Write-DebugInfo "Deleting File '$File'"
30.  Remove-Item $File | out-null
31. }
32. }

 In the powershell command shell, just launch
> DeleteOldLogs.PS1 "C:\temp" "true"

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