fsck_v7fs —
7th Edition(V7) filesystem consistency checker
  
    | fsck_v7fs | [ -FnPpy] [-Bbyteorder] [-ooptions] filesystem ... | 
The fsck_v7fs utility verifies and repairs Version 7
  file systems.
The following flags are interpreted by
    fsck_v7fs.
  - -Bbyteorder
- Convert the file system metadata to byteorder byte
      order if needed. Valid byte orders are “be”,
      “le”, and “pdp”.
- -F
- Check file system inside a regular file.
- -n
- Do not correct file system.
- -o
- Options are specified with a -oflag followed by a
      comma separated string of options. The following options are available:
      - data
- Check data block duplication.
- free
- Check free block duplication.
 
- -P
- Display a progress meter for the file system check.
- -p
- Preen mode. See fsck(8).
- -y
- Causes fsck_v7fsto assume yes as the answer to
      all operator questions.
 
A fsck_v7fs utility appeared in NetBSD
  6.0.
fsck_v7fs is still under construction.