add icinga downtime scheduling script, add whois script, optimize mailbox usage

whois.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+#
+# Checks if the specific domain is available
+
+
+domain=$1
+check=$(whois -h whois.nic.ch -p 4343 $domain | head -1 | awk -F':' {'print $1'})
+
+
+case "$check" in
+	0)
+		# already registered
+	       	;;
+	1)
+		echo "free!" | mail -s "$domain is free!" oli@lugh.ch ;;
+	*)
+		echo "unhandled, see https://www.nic.ch/reg/cm/wcm-page/faqs/technical/whoisis.jsp" ;;
+esac