df: invalid option -- T
BusyBox v1.2.1 (2006.12.28-05:40+0000) multi-call binary

Usage: df [-hmk] [FILESYSTEM ...]

Print the filesystem space used and space available.

Options:

        -h      print sizes in human readable format (e.g., 1K 243M 2G )
        -m      print sizes in megabytes
        -k      print sizes in kilobytes(default)