Added scan-folder.ps1

scripts/scan-folder.ps1

@@ -0,0 +1,47 @@
+<#
+.SYNOPSIS
+	Scans a folder for viruses
+.DESCRIPTION
+	This PowerShell script scans the given folder (including subfolders) for viruses. Requires the installation of ESET or Windows Defender.
+.PARAMETER path
+	Specifies the file path to the folder (default is working directory).
+.EXAMPLE
+	PS> ./scan-folder.ps1 C:\Windows
+	⏳ Scanning folder with ESET Antivirus...
+	...
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$path = "$PWD")
+
+try {
+	$stopWatch = [system.diagnostics.stopwatch]::startNew()
+
+	if (-not(Test-Path $path -pathType container)) { throw "Invalid file path: $path" }
+	$path = Resolve-Path $path
+
+	if (Test-Path "C:\Program Files\ESET\ESET Security\ecls.exe" -pathType leaf) {
+
+		"⏳ Scanning folder with ESET Antivirus..."
+		& "C:\Program Files\ESET\ESET Security\ecls.exe" $path
+		if ($lastExitCode -ne 0) { throw "ESET Antivirus failed with exit code $lastExitCode - POTENTIAL DANGER!!!" }
+
+	} elseif (Test-Path "C:\Program Files\Windows Defender\MpCmdRun.exe" -pathType leaf) {
+
+		"⏳ Scanning folder with Windows Defender..."
+		& "C:\Program Files\Windows Defender\MpCmdRun.exe" -Scan -ScanType 2 -File $path
+		if ($lastExitCode -ne 0) { throw "Windows Defender failed with exit code $lastExitCode - POTENTIAL DANGER !!!" }
+
+	} else {
+		throw "Found no ESET or Windows Defender - please install one."
+	}
+	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
+	"✅ Scanned 📂$path in $($elapsed)s: No malware found."
+	exit 0 # success
+} catch {
+	"⚠️ Error: $($Error[0])"
+	exit 1
+}