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=encoding utf8 =head1 NAME POSIX::1003::Sysconf - POSIX access to sysconf() =head1 SYNOPSIS use POSIX::1003::Sysconf; # load all names use POSIX::1003::Sysconf qw(sysconf); # keys are strings! $ticks = sysconf('_SC_CLK_TCK'); use POSIX::1003::Sysconf qw(sysconf _SC_CLK_TCK); $ticks = _SC_CLK_TCK; # constants are subs use POSIX::1003::Sysconf '%sysconf'; my $key = $sysconf{_SC_CLK_TCK}; $sysconf{_SC_NEW_KEY} = $key_code; $ticks = sysconf($key); print "$_\n" for keys %sysconf; =head1 DESCRIPTION The C<sysconf()> interface can be used to query system information in numerical form, where C<confstr()> returns strings. =head1 METHODS =head1 FUNCTIONS =head2 Standard POSIX =over 4 =item B<sysconf>($name) Returns the sysconf 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 $ticks = sysconf('_SC_CLK_TCK') || 1000; =back =head2 Additional =over 4 =item B<sysconf_names>() Returns a list with all known names, unsorted. =back =head1 CONSTANTS =over 4 =item B<%sysconf> This exported variable is a tied HASH which maps C<_SC_*> names on unique numbers, to be used with the system's C<sysconf()> 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_SYSCONF_START During installation, a symbol table will get inserted here. =for comment #TABLE_SYSCONF_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/>
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