automate node changes and activate.

[#1]

Hi All I have a similar question . How to update a lot of nodes in the content repository? .
Once the changes are in place how to activate those modified pages.?

[#2]

You can do update and activate(using Replication API) programatically in a same program/utility.

e.g. http://www.sotheanim.com/21-how-to-programmatically-activate-cq-page