usage: ntpshmmon [OPTIONS]

  --count COUNT       Exit after COUNT samples
  --help              Print this help, then exit
  --offset            Replace Seen@ with Offset
  --rmshm             Remove SHMs and exit
  --seconds SECONDS   Exit after SECONDS seconds
  --verbose           Be verbose
  --version           Show version, then exit
  -?                  Print this help and exit.
  -h                  Print this help and exit.
  -n COUNT            Exit after COUNT samples
  -o                  Replace Seen@ with Offset
  -s                  Remove SHMs and exit
  -t SECONDS          Exit after SECONDS seconds
  -v                  Be verbose
  -V                  Print version and exit.