From ae4ed87a311fad5664847b793c910221eec65507 Mon Sep 17 00:00:00 2001
From: JaeyoungLim <gokoreas@gmail.com>
Date: Wed, 24 Jun 2020 09:12:44 +0200
Subject: [PATCH] Simplify getting sim PID

Follow up of https://github.com/PX4/Firmware/pull/15206#pullrequestreview-436356707
---
 Tools/sitl_run.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Tools/sitl_run.sh b/Tools/sitl_run.sh
index 1b7a30a674..324969718e 100755
--- a/Tools/sitl_run.sh
+++ b/Tools/sitl_run.sh
@@ -104,7 +104,7 @@ elif [ "$program" == "gazebo" ] && [ ! -n "$no_sim" ]; then
 				gzserver "$PX4_SITL_WORLD" &
 			fi
 		fi
-		SIM_PID=`echo $!`
+		SIM_PID=$!
 		gz model --spawn-file="${src_path}/Tools/sitl_gazebo/models/${model}/${model}.sdf" --model-name=${model} -x 1.01 -y 0.98 -z 0.83