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.
postdrop -V (return code: -15)
postdrop: invalid option -- '-'
postdrop: fatal: usage: postdrop [-c config_dir] [-v]
postdrop -HELP (return code: -15)
postdrop: invalid option -- '-'
postdrop: fatal: usage: postdrop [-c config_dir] [-v]