sxmo-utils/scripts/core/sxmo_audiocurrentdevice.sh

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#!/usr/bin/env sh
audiodevice() {
amixer sget "Earpiece" | grep -E '\[on\]' > /dev/null && echo Earpiece && return
amixer sget "Headphone" | grep -E '\[on\]' > /dev/null && echo Headphone && return
amixer sget "Line Out" | grep -E '\[on\]' > /dev/null && echo Line Out && return
echo "None"
}
audiodevice