Net::servent man page on BSDOS

Man page or keyword search:  
man Server   6284 pages
apropos Keyword Search (all sections)
Output format
BSDOS logo
[printable version]



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

NAME
       Net::servent - by-name interface to Perl's built-in
       getserv*() functions

SYNOPSIS
	use Net::servent;
	$s = getservbyname(shift || 'ftp') || die "no service";
	printf "port for %s is %s, aliases are %s\n",
	   $s->name, $s->port, "@{$s->aliases}";

	use Net::servent qw(:FIELDS);
	getservbyname(shift || 'ftp') || die "no service";
	print "port for $s_name is $s_port, aliases are @s_aliases\n";

DESCRIPTION
       This module's default exports override the core
       getservent(), getservbyname(), and getnetbyport()
       functions, replacing them with versions that return
       "Net::servent" objects.	They take default second
       arguments of "tcp".  This object has methods that return
       the similarly named structure field name from the C's
       servent structure from netdb.h; namely name, aliases,
       port, and proto.	 The aliases method returns an array
       reference, the rest scalars.

       You may also import all the structure fields directly into
       your namespace 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 n_.  Thus, $serv_obj->name() corresponds to
       $s_name if you import the fields.  Array references are
       available as regular array variables, so for example @{
       $serv_obj->aliases() } would be simply @s_aliases.

       The getserv() function is a simple front-end that forwards
       a numeric argument to getservbyport(), and the rest to
       getservbyname().

       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::servent qw(:FIELDS);

16/Sep/1999	       perl 5.005, patch 03			1

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

	while (@ARGV) {
	    my ($service, $proto) = ((split m!/!, shift), 'tcp');
	    my $valet = getserv($service, $proto);
	    unless ($valet) {
		warn "$0: No service: $service/$proto\n"
		next;
	    }
	    printf "service $service/$proto is port %d\n", $valet->port;
	    print "alias are @s_aliases\n" if @s_aliases;
	}

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

AUTHOR
       Tom Christiansen

16/Sep/1999	       perl 5.005, patch 03			2

[top]
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server BSDOS

List of man pages available for BSDOS

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