From 3396b9242845dfc8ed54bc58a7351d4854fc687c Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Tue, 6 Jul 2021 15:13:06 -0400
Subject: [PATCH] added grep for Loopback fora play

---
 groundstation/aprs-cubesatsim.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/groundstation/aprs-cubesatsim.sh b/groundstation/aprs-cubesatsim.sh
index 1ae0b5d6..87e0cbbf 100755
--- a/groundstation/aprs-cubesatsim.sh
+++ b/groundstation/aprs-cubesatsim.sh
@@ -31,8 +31,11 @@ direwolf -t 0 &
 
 sleep 5
 
-#rtl_fm -M fm -f 144.39M -s 48k | aplay -D hw:2,0,0 -r 48000 -t raw -f S16_LE -c 1
-rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:2,0,0 -r 48000 -t raw -f S16_LE -c 1
+value=`aplay -l | grep "Loopback"`
+echo "$value" > /dev/null
+set -- $value
+
+rtl_fm -M fm -f 434.9M -s 48k | aplay -D hw:${2:0:1},0,0 -r 48000 -t raw -f S16_LE -c 1