Net::hostent man page on AIX

Man page or keyword search:  
man Server   4752 pages
apropos Keyword Search (all sections)
Output format
AIX logo
[printable version]

Net::hostent(3)	       Perl Programmers Reference Guide	       Net::hostent(3)

NAME
       Net::hostent - by-name interface to Perl's built-in gethost*() func‐
       tions

SYNOPSIS
	use Net::hostent;

DESCRIPTION
       This module's default exports override the core gethostbyname() and
       gethostbyaddr() functions, replacing them with versions that return
       "Net::hostent" objects.	This object has methods that return the simi‐
       larly named structure field name from the C's hostent structure from
       netdb.h; namely name, aliases, addrtype, length, and addr_list.	The
       aliases and addr_list methods return array reference, the rest scalars.
       The addr method is equivalent to the zeroth element in the addr_list
       array reference.

       You may also import all the structure fields directly into your names‐
       pace as regular variables using the :FIELDS import tag.	(Note that
       this still overrides your core functions.)  Access these fields as
       variables named with a preceding "h_".  Thus, "$host_obj->name()" cor‐
       responds to $h_name if you import the fields.  Array references are
       available as regular array variables, so for example "@{
       $host_obj->aliases() }" would be simply @h_aliases.

       The gethost() function is a simple front-end that forwards a numeric
       argument to gethostbyaddr() by way of Socket::inet_aton, and the rest
       to gethostbyname().

       To access this functionality without the core overrides, pass the "use"
       an empty import list, and then access function functions with their
       full qualified names.  On the other hand, the built-ins are still
       available via the "CORE::" pseudo-package.

EXAMPLES
	use Net::hostent;
	use Socket;

	@ARGV = ('netscape.com') unless @ARGV;

	for $host ( @ARGV ) {

	   unless ($h = gethost($host)) {
	       warn "$0: no such host: $host\n";
	       next;
	   }

	   printf "\n%s is %s%s\n",
		   $host,
		   lc($h->name) eq lc($host) ? "" : "*really* ",
		   $h->name;

	   print "\taliases are ", join(", ", @{$h->aliases}), "\n"
		       if @{$h->aliases};

	   if ( @{$h->addr_list} > 1 ) {
	       my $i;
	       for $addr ( @{$h->addr_list} ) {
		   printf "\taddr #%d is [%s]\n", $i++, inet_ntoa($addr);
	       }
	   } else {
	       printf "\taddress is [%s]\n", inet_ntoa($h->addr);
	   }

	   if ($h = gethostbyaddr($h->addr)) {
	       if (lc($h->name) ne lc($host)) {
		   printf "\tThat addr reverses to host %s!\n", $h->name;
		   $host = $h->name;
		   redo;
	       }
	   }
	}

NOTE
       While this class is currently implemented using the Class::Struct mod‐
       ule to build a struct-like class, you shouldn't rely upon this.

AUTHOR
       Tom Christiansen

perl v5.8.8			  2008-09-19		       Net::hostent(3)
[top]
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server AIX

List of man pages available for AIX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net