--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/macosx-debug.rst	Thu Jan 19 23:49:10 2012 +0200
@@ -0,0 +1,20 @@
+.. -*- coding: utf-8 -*-
+
+========================
+ Debugging in Mac OS X.
+========================
+
+dtruss.
+=======
+
+  $ dtruss df -h     # run and examine the "df -h" command
+  $ dtruss -p 1871   # examine PID 1871
+  $ dtruss -n tar    # examine all processes called "tar"
+
+dtrace.
+=======
+::
+
+  $ man -k dtrace
+  $ dapptrace
+