I don't think there is much use to it other than fun little gimmick.
To that end, I could see it being sort of fun to run like "ls" and see the list of post categories, then do like "ls posts/" to see all the general posts, then "cat posts/i-am-a-post.txt" to read the post.
To that end, I could see it being sort of fun to run like "ls" and see the list of post categories, then do like "ls posts/" to see all the general posts, then "cat posts/i-am-a-post.txt" to read the post.