```{index} single: s_isdir; Fcntl function ``` ```{index} single: Fcntl::s_isdir; Perl function ``` # s_isdir True if a stat-mode value names a directory. ## Synopsis ```perl my $mode = (stat $path)[2]; print "directory\n" if S_ISDIR($mode); ``` Returns `1` when `$mode & S_IFMT == S_IFDIR`, `0` otherwise. With no argument, returns `0`.