If you need to remove all those hidden ‘.files’ from some folder recursively, you can cd into where you want to remove and use the code below:
find . -name ._\* -print0 | xargs -0 rm -f
When you install a Raspbian Operation System on your Raspberry Pi (I’m currently using Minibian) you can notice that it created a file system with very little space, which can be annoying if you are using a bigger SD card.
I only noticed it when I started to apt-get all those packages that I needed, when suddenly got the message:
cannot copy extracted data for './usr/sbin/php5-fpm' to '/usr/sbin/php5-fpm.dpkg-new': failed to write (No space left on device)
Looking into the SD card’s memory I get: