First of all, I don't know where is the right place to post this question. Maybe I should post it in both AskUbuntu and here.
I would like to understand what is happening. I deleted a file of around 200Mb by pressing the 'delete' key under Ubuntu 14.04. After that, I checked the memory available, and to my surprise, no memory was freed. I looked at some answers here to fix the problem but found nothing, and decided to empty my recycle bin, maybe that had something to do with it, and it had, after I emptied the recycle bin, a loooot more of memory became available.
The question is, what's happening? Why does Ubuntu trash has something to do with the memory in my external device? Is this Android specific or is a Ubuntu 'feature'?
I have Android 2.2.