Perl5 リファレンス



       readdir DIRHANDLE
               Returns the next directory entry for a directory
               opened by `opendir'.  If used in list context,
               returns all the rest of the entries in the
               directory.  If there are no more entries, returns
               an undefined value in scalar context or a null
               list in list context.

               If you're planning to filetest the return values
               out of a `readdir', you'd better prepend the
               directory in question.  Otherwise, because we
               didn't `chdir' there, it would have been testing
               the wrong file.

                   opendir(DIR, $some_dir) || die "can't opendir $some_dir: $!";
                   @dots = grep { /^\./ && -f "$some_dir/$_" } readdir(DIR);
                   closedir DIR;


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