The DOS2UNIX in the Haikuports repository is a public domain version I found on the internet. It's a bare bones dos to unix end of line converter. It would be nice it if could be enhanced so that it could also convert subdirectories when given a pathname. It would also be nice if it could display basic info on it's command line options.
Command line options should include -r for recursive, -v or --version to print out the version info and -h or --help to print out the list of options.