If the wrong command is measured during the Linux character console operation, the horn uploaded by the motherboard will issue "Dud ...", sometimes people hate. The following scripts can be easily shut down / open the buzzer (speaker). #! / bin / shif ["$ 1" = "OFF"]; thenecho -e "/ 33 [11; 0]" Echo "Bell Turned Off." FIF ["$ 1" = "on"]; thenecho -e " / 33 [10; 750] / 33 [11; 250] "Echo" Bell Turned ON. "FIF [" $ 1 "=" "]; thenecho" Usage: $ 0 "FIE Note Space Can't Less Bt linux