diff --git a/acatcher/roomck.sh b/acatcher/roomck.sh
new file mode 100755
index 0000000..28d9e02
--- /dev/null
+++ b/acatcher/roomck.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+if [ ! -f "$1" ]; then
+  echo "error: must specify rooms file"
+  exit 1
+fi
+
+for ROOM in `cat "$1"`; do
+  if grep -q "|$ROOM\$" MASTER_LIST; then
+    echo "found valid room $ROOM"
+  else
+    echo "FOUND INVALID ROOM $ROOM"
+  fi
+done