Displaying ‘All posts’ as we display ‘Tags’ in Sidebar

u want to display recent posts in your side bar or from particular category ?

if from category use the below one :

<?php
      $catposts = get_posts('numberposts=10&category=17');
      foreach($catposts as $post) :
   ?>

replace the numbers as per your convenience

if u need recent posts use the below one :

<?php get_archives('postbypost','10'); ?>

Thanks a lot SriBharat,
But the problem is in the theme which I am using don’t have a separate sidebar.php , instead it calls like this

<div class=”column column300 last”>
<?php if ( !function_exists(‘dynamic_sidebar’) || !dynamic_sidebar(‘sidebar-blog’) ) : ?><?php endif; ?>
<?php if ( !function_exists(‘dynamic_sidebar’) || !dynamic_sidebar(‘sidebar-all’) ) : ?><?php endif; ?>
</div><!– end column 300 –>

Now where do I insert the above code.

Here is the link of the theme
https://curtziegler.com/sitedemo/wordpress-minimal/

Many Thanks,
Balaji

Another thing is irrespective of Category, how to display all the ‘posts’
in sidebar