shishi_realm_default_guess - API function

       Copyright © 2002-2022 Simon Josefsson.
       Copying and distribution of this file, with or without modification, are permitted in any medium  without
       royalty provided the copyright notice and this notice are preserved.

       Guesses  a  realm  based  on  getdomainname(),  which  really  responds  with a NIS/YP domain, but if set
       properly, it might be a good first guess.  If this NIS  query  fails,  call  gethostname(),  and  on  its
       failure, fall back to returning the artificial string "could-not-guess-default-realm".

       Note  that  the  hostname is not trimmed off of the string returned by gethostname(), thus pretending the
       local host name is a valid realm name.  The resulting corner case could merit a check that the  suggested
       realm is distinct from the fully qualifies host, and if not, simply strip the host name from the returned
       string  before it is used in an application.  One reason for sticking with the present behaviour, is that
       some systems respond with a non-qualified host name as reply from gethostname().

       shishi_realm_default_guess - API function

       Report  bugs  to <bug-shishi@gnu.org>.  GNU Shishi home page: http://www.gnu.org/software/shishi/ General
       help using GNU software: http://www.gnu.org/gethelp/

       Returns a guessed realm for the running host, containing a string that has to be deallocated with  free()
       by the caller.

       The full documentation for shishi is maintained as a Texinfo manual.  If the info and shishi programs are
       properly installed at your site, the command

              infoshishi

       should give you access to the complete manual.

shishi                                                1.0.3                        shishi_realm_default_guess(3)

#include<shishi.h>char*shishi_realm_default_guess();