From 20dc77cbc88c0f2c3e33bfe71e6097dc86c7a89e Mon Sep 17 00:00:00 2001
From: krakenrf <78108016+krakenrf@users.noreply.github.com>
Date: Tue, 1 Nov 2022 23:46:59 +1300
Subject: add sudo heatbeat

It's possible that some peoples trouble with the install scripts is due to the sudo timeout limit expiring before the script finishes, if the user has a very slow machine or slow network connection. Added a sudo heartbeat thread to keep the timeout alive.
---
 install_scripts/krakensdr_aarch64_install_doa_pr.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/install_scripts/krakensdr_aarch64_install_doa_pr.sh b/install_scripts/krakensdr_aarch64_install_doa_pr.sh
index 17880d4..1954f2b 100644
--- a/install_scripts/krakensdr_aarch64_install_doa_pr.sh
+++ b/install_scripts/krakensdr_aarch64_install_doa_pr.sh
@@ -1,4 +1,16 @@
 #!/bin/bash
+
+# Prevent sudo timeout
+sudo -v # ask for sudo password up-front
+while true; do
+  # Update user's timestamp without running a command
+  sudo -nv; sleep 1m
+  # Exit when the parent process is not running any more. In fact this loop
+  # would be killed anyway after being an orphan(when the parent process
+  # exits). But this ensures that and probably exit sooner.
+  kill -0 $$ 2>/dev/null || exit
+done &
+
 sudo apt update
 sudo apt -y install build-essential git cmake libusb-1.0-0-dev lsof libzmq3-dev clang php-cli nodejs gpsd libfftw3-3 libfftw3-dev
 
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