This software is a simple utility for testing a serial port. It reads from the standard input and writes to a serial port. Often I wondered why no one ever published such a tool before. I myself have needed such a thing when developing embedded systems. Anyhow, here it is now, for you to enjoy.
The software is copyrighted by the author and is licensed under the GNU General Public License. See the file, COPYING, for details of the license terms.