```{index} single: config_vars; Config function ``` ```{index} single: Config::config_vars; Perl function ``` # config_vars Print selected configuration entries to `STDOUT`. ## Synopsis ```perl use Config; Config::config_vars(qw(archname osname ivsize)); ``` ## What you get back Nothing. Each named key is written to `STDOUT` on its own line as `key='value';`. Unknown keys render with an empty value. ## Examples ```perl use Config; Config::config_vars('archname'); # archname='x86_64-linux'; Config::config_vars('archname', 'osname'); # two lines ``` ## Edge cases - Empty key names are skipped silently. - Output goes straight to the OS `STDOUT`; redirecting with `local *STDOUT` in Perl does not affect it. ## Differences from upstream Fully compatible with upstream.