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LICENSE
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LICENSE
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MIT License
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Copyright (c) 2025 Allan Christensen
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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README.md
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README.md
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# NTP Client for Ubuntu 24.04 Server
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[](#)
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[](#)
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[](#)
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[](./LICENSE)
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Automated Bash installer script for configuring an **NTP client** on Ubuntu 24.04 Server.
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This is a **production-focused installer**, not a demo.
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---
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### Preparing
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Update your package index before running the installer:
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```
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sudo apt update -y
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```
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### Download the Script
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Clone the repository from your Git server:
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```
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git clone https://git.x-files.dk/server/ntp-client-ubuntu.git
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```
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```
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cd ntp-client-ubuntu
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```
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### Usage
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Run the script using:
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```
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sudo ./ntp-client-install
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```
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### Check if it's Working
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Use the following command to verify synchronization with NTP servers:
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```
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ntpq -p
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```
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### Post-install
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Nothing to do.
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---
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### More Information
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More guides and documentation can be found on [wiki.x-files.dk](https://wiki.x-files.dk)
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---
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### License
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Licensed under the [MIT License](./LICENSE).
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---
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last-tested
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------------------------------------
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Last tested: 15-10-2025 (DD-MM-YYYY)
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Environment: Ubuntu Server 24.04 LTS
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------------------------------------
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85
ntp-client-install
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ntp-client-install
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#!/usr/bin/env bash
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# Author : Allan Christensen
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# First Created : 05012022 (DD-MM-YYYY)
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# Description : Installs Ntp client on Ubuntu 24.04
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# License : MIT License (see LICENSE file for details)
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#
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# Are we root
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#
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if [[ $(id -u) -ne 0 ]]; then echo "" && echo "Must be root or use sudo" && echo ""; exit 1; fi
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#
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# Install and enable NTP
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#
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apt install -y ntp ntpdate && systemctl enable ntp
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#
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# Disable systemd-timesyncd NTP
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#
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timedatectl set-ntp off
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#
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# Sync time once
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#
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ntpdate -u 0.pool.ntp.org
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#
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# Determine which NTP config file to use
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#
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# Default NTP config file
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conf_file="/etc/ntp.conf"
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#
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# If ntpsec is installed, override with ntpsec's config file
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#
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if [ -f /etc/ntpsec/ntp.conf ]; then conf_file="/etc/ntpsec/ntp.conf" ; fi
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#
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# Backup existing config file
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#
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backup_file="${conf_file}.bak"; cp "$conf_file" "$backup_file"
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#
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# Define NTP servers
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#
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ntp_servers="server 0.pool.ntp.org
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server 1.pool.ntp.org
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server 2.pool.ntp.org
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server 3.pool.ntp.org"
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#
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# Comment out existing pool servers
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#
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sed -i '/pool.ntp.org/ s/^/# /g' "$conf_file"
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#
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# Add the new defined servers
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tmp_file="/tmp/ntpconf" ; printf "%s\n" "$ntp_servers" > "$tmp_file"
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# Insert after a line containing "Specify one" if it exists else append at the end
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if grep -q "Specify one" "$conf_file"; then
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sed -i "/Specify one/r $tmp_file" "$conf_file"
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else
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cat "$tmp_file" >> "$conf_file"
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fi
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#
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# Restart NTP service
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#
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systemctl restart ntp
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#
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# Clean up
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#
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rm -f "$tmp_file"
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#
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# All done
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#
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printf "\nAll Done...\n"
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#
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# End of script
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#
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