Undocumented in source.
auto helpText = q"EOS Synopsis: dircat [options] <directory> This tool concatenates all files in a directory, writing the contents to standard output. The contents of each file is preceded with a line containing the path of the file. The current features are very simple. The directory must contain only regular files. It is an error if the directory contains subdirectories or symbolic links. Exit status is '0' on success, '1' if an error occurred. Options: EOS";