Disable the system beep (bell)
Follow @ggarronTo disable the system bell or beep on Linux, at least the tab completion, and the back space bell. Edit the file /etc/inputrc (as root) and add this line.
set bell-style none
Do that if you want to be a system wide setup.
If you want it only for some user session or for your own session.
Edit the file ~/.inputrc
and there add the line.
set bell-style none