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.
db5.3_checkpoint -VERSION (return code: 0)
Berkeley DB 5.3.28: (September 9, 2013)
db5.3_checkpoint --help (return code: 1)
db5.3_checkpoint: invalid option -- '-'
usage: db5.3_checkpoint [-1Vv]
[-h home] [-k kbytes] [-L file] [-P password] [-p min]