DOKK / manpages / debian 10 / rxvt-unicode / urxvt-bell-command.1.en
urxvt-bell-command(1) RXVT-UNICODE urxvt-bell-command(1)

bell-command - execute a command when the bell rings

Runs the command specified by the "URxvt.bell-command" resource when a bell event occurs. For example, the following pops up a notification bubble with the text "Beep, Beep" using notify-send:

   URxvt.bell-command: notify-send "Beep, Beep"
2021-05-21 9.22