Example:
httrack.ex www.domain.com/index.aspx -O "E:\\Dir1\\Dir2" -*
+http://www.domain.com/list.aspx?&tipnek=*&podtip=*
-http://www.domain.com/list.aspx?&tipnek=*&podtip=*&* -C1 -p1 -z -q 

How to use etag or last modified options in httrack command line to download
only dose pages that have been changed?