urxvt256c-ml-bell-command (1) Linux Manual Page

bell-command – execute a command when the bell rings

Description

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"