BuddyPress.org

Hello,
I want to define my_own_function like functions and modify the original functions. But I don’t know which function or “action” thing to replace or remove. For example, this is the original admin bar hook:

add_action( ‘bp_adminbar_menus’, ‘bp_adminbar_blogs_menu’, 6 );

This is remove action hook:
remove_action(‘bp_adminbar_menus’, ‘bp_adminbar_blogs_menu’, 6);

And this one is the replace hook:
add_action(‘bp_adminbar_menus’, ‘my_adminbar_blogs_menu’, 6);

We all know those for the admin bar. But if I want to replace another action or function, where can I find it? Is there a plugin for this (I don’t know whether WP Hook Sniffer works for this or not.)

Let’s say I want to replace groups_post_update, what hooks will I replace and how will I know they’re the hooks that I need to replace or remove.

Thanks.