folder names organized by date, how to find the latest?

Question

Trying to do this with command line or with ruby, but I have a number of folders which their names correspond to a date (they are db dumps), I want to find the latest folder and do something with it.

Example: /dumps has folders: /dumps/2015-08-09 , /dumps/2015-08-11 , /dumps/2015-08-20

How can I do so in command line or perhaps ruby?

Thanks!

Answer 1

由于子文件夹具有明智的名称：

last_folder = Dir.glob("/dumps/*").sort.last

Answer 2

use ls

ls -lrt dumps/* 

should work

and than you can use tail -n1 to get the last line