Add list-os-updates.ps1

Scripts/list-os-updates.ps1

@@ -0,0 +1,25 @@
+<#
+.SYNTAX       list-os-updates.ps1 [<RSS-URL>] [<max-count>]
+.DESCRIPTION  lists the latest operating system updates
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+param($RSS_URL = "https://distrowatch.com/news/dwd.xml", [int]$MaxCount = 20)
+
+try {
+	& "$PSScriptRoot/write-big.ps1" "OS Updates"
+	[xml]$Content = (invoke-webRequest -URI $RSS_URL).Content
+	"`t(by $($Content.rss.channel.title))"
+
+	[int]$Count = 0
+	foreach ($item in $Content.rss.channel.item) {
+		"`t→ $($item.title)"
+		$Count++
+		if ($Count -eq $MaxCount) { break }
+	}
+	exit 0
+} catch {
+	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}