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#!/bin/bash
set -euo pipefail
current_volume=$(pactl get-sink-volume @DEFAULT_SINK@ | grep Volume | sed -e 's/.* \([0-9][0-9]*\)%.*/\1/')
case $1 in
up)
increment=$(( 5 - ( current_volume % 5 ) ))
newvol=$(( current_volume + increment ))
if [ $newvol -gt 100 ]; then
newvol=100
fi
pactl set-sink-volume @DEFAULT_SINK@ $newvol%
echo $newvol;;
down)
increment=$(( ( ( current_volume - 1 ) % 5 ) + 1 ))
newvol=$(( current_volume - increment ))
if [ $newvol -lt 0 ]; then
newvol=0
fi
pactl set-sink-volume @DEFAULT_SINK@ $newvol%
echo $newvol;;
esac
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