1.) Add following line to the end of /etc/services
bashweb      50000/tcp                       # bashweb

2.) move bashweb to /etc/xinetd.d/bashweb

3.) move www.bash to /usr/sbin/www.bash

4. Set executable permisson
chmod 700 /usr/sbin/www.bash

5.) Restart xinetd
service xinetd restart

Browse to http://<SERVER_IP>:50000/PASSWORD/ls -la
to test