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.
hpls version (return code: 0)
hpls: hpls: Unable to read file for cached Volume information. (No such file or directory)
hpls --help (return code: 1)
hpls: invalid option -- '-'
Usage: hpls [options] [hfs-path ...]