=encoding utf8

=head1 NAME

POSIX::1003::Confstr - POSIX access to confstr()

=head1 SYNOPSIS

  use POSIX::1003::Confstr;   # import all

  use POSIX::1003::Confstr 'confstr';
  my $path = confstr('_CS_PATH');

  use POSIX::1003::Confstr '_CS_PATH';
  my $path = _CS_PATH;

  use POSIX::1003::Confstr '%confstr';
  my $key = $confstr{_CS_PATH};
  $confstr{_CS_NEW_CONF} = $key;

=head1 DESCRIPTION

With C<confstr()> you can retreive string values from the operating
system. It is the counterpart of C<sysconf()> which can only return
numeric values.

=head1 METHODS

=head1 FUNCTIONS

=head2 Standard POSIX

=over 4

=item B<confstr>($name)

Returns the confstr value related to the NAMEd constant.  The $name
must be a string. C<undef> will be returned when the $name is not
known by the system.

example: 

  my $path = confstr('_CS_PATH') || '/bin:/usr/bin';

=back

=head2 Additional

=over 4

=item B<confstr_names>()

Returns a list with all known names, unsorted.

=back

=head1 CONSTANTS

=over 4

=item B<%confstr>

This exported variable is a (tied) HASH which maps C<_CS_*>
names to the unique numbers to be used with the system's C<confstr()>
function.

=back

The following constants where detected on your system when the
module got installed.  The second column shows the value which
where returned at that time.

=for comment
#TABLE_CONFSTR_START

  During installation, a symbol table will get inserted here.

=for comment
#TABLE_CONFSTR_END

=head1 SEE ALSO

This module is part of POSIX-1003 distribution version 1.02,
built on November 10, 2020. Website: F<http://perl.overmeer.net/CPAN>.  The code is based on L<POSIX>, which
is released with Perl itself.  See also L<POSIX::Util> for
additional functionality.

=head1 COPYRIGHTS

Copyrights 2011-2020 on the perl code and the related documentation
 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://dev.perl.org/licenses/>

