script/aws-ubuntu2204-init.sh at main · SecondDim/script · GitHub

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#/bin/bash

set -e

echo "=================================================="
echo "========== init update ==========================="
echo "=================================================="

sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y

echo "=================================================="
echo "========== download file ========================="
echo "=================================================="

set -x

curl https://raw.githubusercontent.com/SecondDim/script/main/.bash_aliases > ~/.bash_aliases

set +x

echo "=================================================="
echo "========== set aws ntp ==========================="
echo "=================================================="

# set aws ntp
sudo apt install chrony

set -x

match='# See http:\/\/www.pool.ntp.org\/join.html for more information.'
insert='server 169.254.169.123 prefer iburst minpoll 4 maxpoll 4'
file='/etc/chrony/chrony.conf'

if ! grep -q "$insert" $file; then
  sudo sed -i "s/$match/$match\n$insert/" $file
  sudo /etc/init.d/chrony restart

  sleep 1
fi

set +x

chronyc sources -v
chronyc tracking

echo "========== [script done] ========================="