Startup script muting audio when you plug/unplug headphones so you don't blow out your eardrums

mute-on-headphone-unplug

#!/bin/bash                                             
                                                        
acpi_listen | while IFS= read -r line; do               
                                                        
    if [ "$line" = "jack/headphone HEADPHONE plug" ]    
    then                                                
        pactl -- set-sink-volume 0 20%                  
        amixer -D pulse set Master mute                 
    elif [ "$line" = "jack/headphone HEADPHONE unplug" ]
    then                                                
        pactl -- set-sink-volume 0 20%                  
        amixer -D pulse set Master mute                 
    fi                                                  
done