What will be the url to show all content type posts?
You will have to use the Views module to create list filtering for a specific content type.

The Views module provides a flexible method for Drupal site designers to control how lists and tables of content (nodes in Views 1, almost anything in Views 2) are presented. Traditionally, Drupal has hard-coded most of this, particularly in how taxonomy and tracker lists are formatted.

This tool is essentially a smart query builder that, given enough information, can build the proper query, execute it, and display the results. It has four modes, plus a special mode, and provides an impressive amount of functionality from these modes.

Among other things, Views can be used to generate reports, create summaries, and display collections of images and other content.
You need Views if:    


You like the default front page view, but you find you want to sort
it differently.
You like the default taxonomy/term view, but you find you want to
sort it differently; for example, alphabetically.
You use /tracker, but you want to restrict it to posts of a certain
type.
You like the idea of the 'article' module, but it doesn't display
articles the way you like. 


Views can do a lot more than that, but those are some of the obvious uses of Views. 

Here is a series of awesome tutorials on Views  (I am not affiliated with the author(s))