Startup script to pause audio if you're idle

pause-on-idle

#!/bin/bash                                                                 
                                                                            
# Courtesy of https://superuser.com/a/638487                                
                                                                            
IDLE_TIME_MIN=15                                                            
IDLE_TIME_SEC=$((IDLE_TIME_MIN*60))                                         
IDLE_TIME_MS=$((IDLE_TIME_SEC*1000))                                        
                                                                            
sleep_time_ms=$IDLE_TIME_MS                                                 
triggered=false                                                             
                                                                            
while sleep $(((sleep_time_ms + 999)/1000)); do                             
    # idle=$(xprintidle) # use instead of you're using X window manager instead of Wayland
    idle=$(dbus-send --print-reply --dest=org.gnome.Mutter.IdleMonitor /org/gnome/Mutter/IdleMonitor/Core org.gnome.Mutter.IdleMonitor.GetIdletime | tail -n 1 | sed 's/ *$//' | sed 's/^ *//' | cut -d' ' -f 2)
                                                     
                                                                            
    if [[ $idle -ge $IDLE_TIME_MS ]]; then                                  
        if ! $triggered ; then                                              
            ######                                                          
            # To install on Ubuntu 18.04: https://askubuntu.com/a/1088268   
            /usr/bin/playerctl pause                                        
            ######                                                          
            triggered=true                                                  
            sleep_time_ms=$IDLE_TIME_MS                                     
        fi                                                                  
    else                                                                    
        triggered=false                                                     
        # Give 100 ms buffer to avoid frantic loops shortly before triggers.
        sleep_time_ms=$((IDLE_TIME_MS-idle+100))                            
    fi                                                                      
done