GET ./fisiere/usage
Returns data about occupied space and available space.
Output example
{"fsMaxSize": "6442450944","fsTotalSize": 89756582,"types": [{"fsTip": "2","fsTotalSize": "9433755"},{"fsTip": "3","fsTotalSize": "3837204"},{"fsTip": "4","fsTotalSize": "76485623"}]}