From 0b4ba9560a66151aec9ec23b25ff10acfdeba10d Mon Sep 17 00:00:00 2001
From: Randall Winkhart <idgr@tutanota.com>
Date: Wed, 10 Jan 2024 15:22:08 -0500
Subject: [PATCH] Only sync ntp once per week, sync to hardware clock

---
 chrootInstall.sh               | 3 +--
 install.sh                     | 2 +-
 programs/ntp-rclocal/ntp.start | 8 ++++++++
 3 files changed, 10 insertions(+), 3 deletions(-)
 create mode 100644 programs/ntp-rclocal/ntp.start

diff --git a/chrootInstall.sh b/chrootInstall.sh
index e70e18d..c53b8cb 100755
--- a/chrootInstall.sh
+++ b/chrootInstall.sh
@@ -20,8 +20,7 @@ echo 'en_US.UTF-8 UTF-8' > /etc/locale.gen
 echo 'LANG=en_US.UTF-8' > /etc/locale.conf
 ln -s /usr/share/zoneinfo/"$timezone" /etc/localtime
 locale-gen
-hwclock --systohc --utc
-echo -e "#!/bin/sh\nntpdate -b pool.ntp.org &" > /etc/local.d/ntp.start
+curl https://raw.githubusercontent.com/rwinkhart/artix-install-script/main/programs/ntp-rclocal/ntp.start -o /etc/local.d/ntp.start
 chmod 755 /etc/local.d/ntp.start
 
 # networkmanager configuration 
diff --git a/install.sh b/install.sh
index 0a25187..8d76e3a 100755
--- a/install.sh
+++ b/install.sh
@@ -3,7 +3,7 @@
 loadkeys us
 echo ----------------------------------------------------------------------------------------------
 echo rwinkhart\'s artix install script
-echo last updated december 28, 2023 \(rev. A\)
+echo last updated january 10, 2024 \(rev. A\)
 echo ----------------------------------------------------------------------------------------------
 echo You will be asked some questions before installation.
 echo -e "----------------------------------------------------------------------------------------------\n"
diff --git a/programs/ntp-rclocal/ntp.start b/programs/ntp-rclocal/ntp.start
new file mode 100644
index 0000000..7eb643c
--- /dev/null
+++ b/programs/ntp-rclocal/ntp.start
@@ -0,0 +1,8 @@
+#!/bin/sh
+old_timestamp="$(</etc/local.d/.ntpsync)"
+new_timestamp="$(date +%s)"
+if [ "$((new_timestamp-old_timestamp))" -gt 604800 ]; then
+    ntpdate -b pool.ntp.org
+    hwclock --systohc --utc
+    echo "$new_timestamp" > /etc/local.d/.ntpsync
+fi