If you use the Tab autocomplete, the CapsLock key 
is often hit as well. Very annoying.

To disable CapsLock for this session:

xmodmap -e "remove lock = Caps_Lock"

To ensure it is disabled at login:

if [ "$PS1" ]; then
    # Disables the %&*! CapsLock button
    xmodmap -e "remove lock = Caps_Lock"
    ...
 fi

in ~/.bashrc or /etc/bashrc (Fedora/RedHat/Centos)


Thanks to Peter Bengtsson (peterbe.com)