Linux - Save only recent 10 folders and delete the rest

Question

I have a folder that contains versions of my application, each time I upload a new version a new sub-folder is created for it, the sub-folder name is the current timestamp, here

Answer 1

There you go. (edited)

ls -dt */ | tail -n +11 | xargs rm -rf

First list directories recently modified then take all of them except first 10, then send them to rm -rf.