**Note:**help and version output are generated by a naïve script which tries a few variants of

*<command> --help*,

*<command> -h*etc. to find the command's help and version info. Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.

### gsl-histogram --version (return code: 0)

gsl-histogram: invalid option -- '-'
Usage: gsl-histogram [-u] xmin xmax [n]
Computes a histogram of the data on stdin using n bins from xmin to xmax.
If n is unspecified then bins of integer width are used.
If -u is given, histogram is normalized so that sum of all bins is unity.

### gsl-histogram --help (return code: 0)

gsl-histogram: invalid option -- '-'
Usage: gsl-histogram [-u] xmin xmax [n]
Computes a histogram of the data on stdin using n bins from xmin to xmax.
If n is unspecified then bins of integer width are used.
If -u is given, histogram is normalized so that sum of all bins is unity.