Permanently deleting a file can cause problems/ putting it in the Trash bin isn’t good either. Learn to get the system to automatically delete old files from the trash in Linux.
If you want to make sure that your sensitive documents and files are completely removed from your Mac, here are a couple of ways to securely delete them.
While the secure empty trash option is gone in OS X El Capitan, there is still a way to do it if needed. Here’s how to empty the trash securely on your Mac using a Terminal command.