statuscheck: add script to check current systemd status

src/sanitycheck

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-LOGGER="logger -t sanitycheck -s"
+LOGGER="logger -t concierge -s"
 
 # ifup: verify interface configuration
 if type "ifquery" > /dev/null; then

src/statuscheck

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+LOGGER="logger -t concierge -s"
+
+# systemd: list units in a failed state
+if type "systemctl" > /dev/null; then
+  systemctl list-units --failed --plain --no-legend 2>&1 | $LOGGER
+fi