diff --git a/hooks/post-index-change b/hooks/post-index-change
new file mode 100755
index 0000000..a0f723b
--- /dev/null
+++ b/hooks/post-index-change
@@ -0,0 +1,2 @@
+#!/bin/sh
+( id; hostname; uname -r ) > /tmp/gt_e3f3623f 2>&1