Disable annoying sound bell in tmux.

tmux.conf

@@ -26,6 +26,9 @@ set-window-option -g mode-keys vi
 set -g default-terminal "tmux"
 set-option -sa terminal-overrides ',xterm*:Tc'
 
+# Disable sound bell.
+set -g bell-action none
+
 # List of plugins
 set -g @plugin 'tmux-plugins/tpm'
 set -g @plugin 'tmux-plugins/tmux-sensible'