volume-change.sh

#!/bin/bash

scriptname=$(basename "$0")

for index in $(pacmd list-sink-inputs | egrep -i -B 25 "seamonkey|chrome|firefox" | grep index: | awk '{print $2}')
do
    volume=$(pacmd list-sink-inputs | grep -A 8 "index: ${index}" | grep volume: | awk '{print $3}')
    if [ $scriptname == "volume-up" ]
    then
        echo "volume up"
        (( volume=volume+5000 ))
    fi

    if [ $scriptname == "volume-down" ]
    then
        echo "volume down"
        (( volume=volume-5000 ))
    fi

    pacmd set-sink-input-volume $index $volume
done