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#!/bin/sh
SINK="$(pactl-get-running-sink)"
if [ -z "$SINK" ]; then
SINK=0
fi
if [ $# -eq 0 ]; then
VOLUME="-10%"
elif echo "$1" | grep -F "%"; then
VOLUME="-${1}"
else
VOLUME="-${1}%"
fi
pactl set-sink-volume "$SINK" "$VOLUME"