How to delete Sharepoint Diagnostic log older than 5 months

Question

Hello , 
How can I automate Sharepoint log deletion older than 5 months using powershell or C# code ?

Answer 1

I ran across this code (frankly forgot where) a few years ago, originally to delete IIS logs, but I use if for everything.  It simply goes through each item in a folder and deletes by date.  I save the code below to a ps script, then call it with
a batch file and schedule a task to run the batch file (reasoning is it is easier to schedule a task to run as a .bat file than .ps1.  Don't forget about changing the execution policy if you decide to use it on non-SharePoint servers as well.
get-childitem -Path C:\inetpub\logs\LogFiles -recurse |
where-object {$_.lastwritetime -lt (get-date).addDays(-7)} |
Foreach-Object { del $_.FullName }