how to turn beep off in linux

1. globally off
In a plain linux console (no graphical X11) you can turn the beep off with the command:

setterm -blength 0

#alternatively you can change the frequency of the beep to a
#very low value:

setterm -bfreq 10

When working under X11 (no matter if KDE, Gnome, XFCE, or ... is used) you turn off the beep with:

xset b off

2 Beep off on a per shell basis
Alternativley you can turn off the beep directly in the shell.

Bash:

# has to go into /etc/inputrc or .inputrc
# It will not work in a .bashrc file!
set bell-style none



Tcsh:


# put this into your .tcshrc file

# just tab completion beep off:
set matchbeep = never
# any beep off:
set nobeep = 1