auto remove old logs

Tools.ps1

@@ -16,9 +16,15 @@ $RootDirectory, $ScriptsDirectory, $ToolsDirectory, $LogsDirectory | ForEach-Obj
 }
 
 ## Setup the log file for messages generated when this script is run
-$LogFile = '{0}\ManagementScript_{1}.log' -f $LogsDirectory, (Get-Date -Format "yyyyMMddHHmmssffff")
+$LogFilePrefix = "ManagementScript"
+$LogFilePostfix = Get-Date -Format "yyyyMMddHHmmssffff"
+$LogFile = "${LogsDirectory}\${LogFilePrefix}_${LogFilePostfix}.log"
 If ( !(Test-Path $LogFile) ) { New-Item -Path $LogFile -ItemType File -Force | Out-Null }
 
+## Delete log files older than 30 days
+$LogFileAllowedAge = (Get-Date).AddDays(-30)
+Get-ChildItem -Path "${LogsDirectory}\${LogFilePrefix}_*.*" -Filter '*.log' | Where-Object {$_.LastWriteTime -lt $LogFileAllowedAge} | Remove-Item -Force -ErrorAction SilentlyContinue | Out-Null
+
 ## Log a message to the log file
 Function LogMsg {
     param([Parameter(Mandatory=$true,ValueFromPipeline=$true)][string]$Message)