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#!/bin/ash
PROC="/proc/asound/cards"
if [ ! -r "$PROC" ]; then
echo "'${PROC}' not found or not readable."
exit 1
fi
if [ -w "/etc" ]; then
FILE="/etc/asound.conf"
elif [ -n "$HOME" ]; then
FILE="${HOME}/.asoundrc"
else
FILE="$(getent passwd root | awk -F ':' '{print $6}')/.asoundrc"
fi
if [ -e "${FILE}" -a "x$1" != "x--force" ]; then
echo "'${FILE}' already exists, use --force to overwrite."
exit 1
fi
# Try to filter HDMI cards first
CARD=$(grep -v -i 'HDMI' "${PROC}" | grep -E -o '^[[:space:]]*[0-9]+[[:space:]]+' | head -n 1)
# If empty, try again with all
[ -z "${CARD}" ] && CARD=$(cat "${PROC}" | grep -E -o '^[[:space:]]*[0-9]+[[:space:]]+' | head -n 1)
if [ -z "${CARD}" ]; then
echo "No sound card found."
exit 1
fi
cat > "${FILE}" <<HEREDOC
pcm.!default {
type hw
card $CARD
}
ctl.!default {
type hw
card $CARD
}
timer.!default {
type hw
card $CARD
}
HEREDOC
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