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dotfiles/apps/de/bar/mic.bash

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#!/usr/bin/env bash
pidfile="/var/run/user/$UID/polybar-mic-script.pid"
if [ -e "$pidfile" ]; then
kill "$(cat "${pidfile}")" > /dev/null 2>&1
cleanup
fi
cleanup() {
rm -f "$pidfile"
}
print_status() {
if amixer get Capture | grep -q '\[off\]'; then
echo ""
else
echo " "
fi
}
toggle() {
amixer set Capture toggle > /dev/null 2>&1
print_status
}
trap "cleanup" EXIT
trap "toggle" USR1
echo $$ > "$pidfile"
while true; do
print_status
sleep 1 &
wait
done