Show information about the file system on which each FILE resides, or all file systems by default.

-a, --all
       include dummy file systems

-B, --block-size=SIZE
       scale sizes by SIZE before printing them.  E.g., `-BM' prints sizes in units of  1,048,576  bytes.
       See SIZE format below.

--total
       produce a grand total

-h, --human-readable
       print sizes in human readable format (e.g., 1K 234M 2G)

-H, --si
       likewise, but use powers of 1000 not 1024

-i, --inodes
       list inode information instead of block usage

-k     like --block-size=1K

-l, --local
       limit listing to local file systems

--no-sync
       do not invoke sync before getting usage info (default)

-P, --portability
       use the POSIX output format

--sync invoke sync before getting usage info

-t, --type=TYPE
       limit listing to file systems of type TYPE

-T, --print-type
       print file system type

-x, --exclude-type=TYPE
       limit listing to file systems not of type TYPE

-v     (ignored)

--help display this help and exit

--version
       output version information and exit