vb2cub

vb2cub will convert any 3D file in a supported format to CUB format. It's superceded by vbconv, but maintained for the benefit of old-timers. Here's the help:

*** DEPRECATION WARNING -- SEE NOTES ***

VoxBo vb2cub (v1.8.5/Jun 14 2011)
usage:
  vb2cub  [<flags>] <3D file/dir> <cubname>
flags:
  -f             convert to floating point
  -n             replace NaNs and Infs with zeros
  -h             show help
  -v             show version
notes:
  vb2cub has been deprecated and is no longer actively maintained.
  please use vbconv or vbim instead, e.g.:

    vbconv foo.nii foo.cub