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#!/bin/sh
err() {
printf "${1} \n"
exit 1
}
help() {
cat << EOF
$0: Wrapper script to change volume
options:
-i [Vol] Increase volume by Vol
-d [Vol] Decrease volume by Vol
-s [Vol] Set volume to Vol
-p Show the current volume
-t Toggle between mute and unmute
-h Print this message and exit
EOF
}
if [ $# != 1 ] && [ $# != 2 ]; then
err "${0}: Invalid usage\nTry \'$0 -h\' for help."
fi
while getopts "i:d:s:pth" option; do
case "${option}" in
i)
pactl set-sink-volume @DEFAULT_SINK@ +"${OPTARG}"% \
> /dev/null 2>&1 && exit 0 \
|| err "${0}: Failed to increase"
;;
d)
pactl set-sink-volume @DEFAULT_SINK@ -"${OPTARG}"% \
> /dev/null 2>&1 && exit 0 \
|| err "${0}: Failed to decrease"
;;
s)
pactl set-sink-volume @DEFAULT_SINK@ "${OPTARG}"% \
> /dev/null 2>&1 && exit 0 \
|| err "${0}: Failed to set"
;;
p)
pactl get-sink-volume @DEFAULT_SINK@ 2>/dev/null\
|| err "${0}: Failed"
;;
t)
pactl set-sink-volume @DEFAULT_SINK@ toggle \
> /dev/null 2>&1 && exit 0 \
|| err "${0}: Failed to toggle"
;;
h)
help
exit 0
;;
*)
err "Try \'${0} -h\' for help"
;;
esac
done
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