(X)Ubuntu microphone mute/unmute script

The goal of this script was to have a simple script, binded with a shortcut which allows to mute/unmute all the microphones and to display a nice notification in the process. This is the simplest version working on xubuntu 14.04 with pulseaudio.

<pre lang="bash">#!/bin/bash

ACTION=1 #1 mute, 0 unmute
SCNT=$(pacmd list-sources | grep muted | wc -l)

MUTED=$(pacmd list-sources | grep muted | grep yes)
if [ $? == 0 ]; then
    ACTION=0
    notify-send -i microphone-sensitivity-medium "Microphone" "Unmutting $SCNT sources..."
else
    notify-send -i microphone-sensitivity-muted "Microphone" "Mutting $SCNT sources..."
fi

#SRC=$(seq $SCNT)
SRC=$(pacmd list-sources | grep index | cut -d':' -f2 | tr -d ' ')

for i in $SRC; do
    #let s=$i-1
    pacmd set-source-mute $i $ACTION
done