How to turn off/disable the beep sound in Redhat / CentOS / Fedora Linux
The beep sound in Linux can be very annoying and disturbing at times. It was generated by pcspkr driver in Linux during load time. Use the following method to disable the beep sound.

smallwei 7:58 pm on August 17, 2010
1. To unload/disable the driver, login as root and run the following command:
rmmod -v pcspkr2. In addition, add the following line in /etc/rc.d/rc.local file:
/sbin/rmmod pcspkr