```{index} single: fetch; Config function ``` ```{index} single: Config::fetch; Perl function ``` # fetch Tied-hash read: return the value stored under a key. ## Synopsis ```perl my $arch = $Config{archname}; # calls FETCH ``` ## What you get back The string value for the given key, or `undef` if the key is either absent or recorded as undef (for example `d_pseudofork`). ## Examples ```perl use Config; print $Config{osname}; # linux print $Config{archname}; # x86_64-linux ``` ## Edge cases - An empty string key returns `undef`. - Missing keys and keys whose recorded value is undef are indistinguishable through `FETCH` alone; use `EXISTS` to tell them apart. ## Differences from upstream Fully compatible with upstream.