Add list-system-files.ps1

Scripts/list-system-files.ps1

@@ -0,0 +1,37 @@
+<#
+.SYNOPSIS
+	Lists all system files in a directory tree
+.DESCRIPTION
+	This PowerShell script scans a directory tree and lists all system files.
+.PARAMETER path
+	Specifies the path to the directory tree (default is current working dir)
+.EXAMPLE
+	PS> ./list-system-files.ps1 C:\Windows
+	...
+	✔️ Found 764 system files within 📂C:\windows in 50 sec
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$path = "$PWD")
+
+try {
+	$stopWatch = [system.diagnostics.stopwatch]::startNew()
+
+	$path = Resolve-Path "$path"
+	Write-Progress "Scanning $path for system files..."
+	[int]$count = 0
+	Get-ChildItem "$path" -attributes System -recurse | Foreach-Object {
+		"📄$($_.FullName)"
+		$count++
+	}
+	Write-Progress -completed " "
+	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
+	"✔️ Found $count system files within 📂$path in $elapsed sec" 
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}