fpack -V (return code: 0)
1.7.0 (Dec 2013) CFITSIO version 3.410
fpack -h (return code: 255)
Error: no FITS files to compress
usage: fpack [-r|-h|-g|-p] [-w|-t <axes>] [-q <level>] [-s <scale>] [-n <noise>] -v <FITS>
more: [-T] [-R] [-F] [-D] [-Y] [-S] [-L] [-C] [-H] [-V] [-i2f]