ypcat --version (return code: 0)
ypcat (yp-tools) 2.9
Copyright (C) 1998, 1999, 2001 Thorsten Kukuk.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Thorsten Kukuk.
ypcat --help (return code: 0)
Usage: ypcat [-kt] [-d domain] [-h hostname] mapname | -x
ypcat - print values of all keys in a NIS database
-d domain Use 'domain' instead of the default domain
-h hostname Query ypserv on 'hostname' instead the current one
-k Display map keys
-t Inhibits map nickname translation
-x Display the map nickname translation table
-?, --help Give this help list
--usage Give a short usage message
--version Print program version