New answers tagged file-management
Indeed there is: "root that knows what it's doing" ;) you gain no usable free space from deleting stuff below /system, as that's the OS's domain and not used to place user content / user apps As the user is not supposed to change stuff here (and neither is the OS while running in "normal mode"), /system is mounted read-only – which means you cannot write ...
the current directory is the first entry in the history. i checked just now. its just below the sd card list.
X-plore is an easy to use app from Google to transfer files from internal to external cards and back. I use it regularly. Go to play.google.com, use search bar at top, search for X-plore. You'll see a couple of the other apps mentioned in earlier responses, both of which I occasionally use.
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