+Check time of last update
+=========================
+::
+
+ $ dig +short home.example.org ANY
+ "Last update 2013-08-21 21.21.28+02.00."
+ 123.45.67.89
+
+
+Test
+====
+You can test it locally:
+
+1. Create config file::
+
+ $ cp ssh-dyndns.sh.config-dist ~/.config/ssh-dyndns.sh
+
+2. Create dummy makefile::
+
+ $ touch /tmp/Makefile
+
+3. Run it::
+
+ $ SSH_CLIENT=192.168.1.4 SSH_CONNECTION=1 ./ssh-dyndns foo home.example.org
+
+4. See generated file::
+
+ $ cat /tmp/data-dyndns-home.example.org
+