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sources/tech/20221017.1 ⭐️ How to Update or Upgrade Ubuntu Offline without Internet.md
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How to Update or Upgrade Ubuntu Offline without Internet 如何在没有网络的情况下，离线更新或升级 Ubuntu
====== ======
**This guide explains the steps to update Ubuntu offline without an active internet connection.** **此教程关于如何一步一步在没有网络的情况下，升级ubuntu**
There are many situations where you may need to update your Ubuntu installation without an internet connection. You may be staying remotely or have a set of network Ubuntu systems that are not connected to the internet. In any case, keeping your system updated with the latest packages is always required. 在有些情况下，你可能需要离线更新ubuntu，又或者你可能在远程状态下需要更新一堆未联网的ubuntu，总的来说你想要升级最新的系统
Of course, updating any system while connected to the internet is always recommended. 当然，始终建议通过联网升级系统。
But sometimes, it is not possible for security reasons also. Connecting to the internet may bring additional hardening steps for your systems to protect them from hackers and malware. 但有时，离线更新系统，有助于网络安全，远离黑客和恶意软件
The following method using [apt-offline][1] helps to fix those use cases and outlines the steps to update your Ubuntu offline without the internet. 以下的方法使用[apt-offline][1]来解决这些问题，离线更新ubuntu
### 准备环节
### Pre-requisite - 一台能连接到网络的ubuntu（你朋友的，咖啡馆，实验室系统）
- 装了安装包的u盘
- 两个系统都安装了 apt-offline.一个系统离线，另一个系统联网
- You need to have access to a Ubuntu system that has an internet connection (e.g. your friends, cafe, or lab system) ### 安装 apt-offline
- A USB pen drive to hold the packages
- Install the apt-offline package in both the systems – a) the offline system and b) the system with an internet connection.
### Install apt-offline 在两个系统下安装apt-offline
both systems 你可以使用以下命令安装 apt-offline。
You can install the `apt-offline` using the following command. Remember, you have to get it installed in .
``` ```
sudo apt install apt-offline sudo apt install apt-offline
``` ```
In case you need the `apt-offline` to be installed in the target system, you can download the deb package from the below link and copy it to the target system via a USB stick. Then run the below command to install. 如果你想装离线安装 apt-offline ，你可以提前下载到u盘里，然后拷出来，再使用下面的命令
The download link for Ubuntu 22.04 LTS and other versions is present below. You can choose a mirror and download the deb file. Ubuntu 22.04 LTS 和其他版本的下载链接如下所示。您可以选择一个镜像并下载 deb 文件。
[download .deb files – apt-offline][2] [下载 .deb 文件 – apt-offline][2]
``` ```
sudo dpkg -i name_of_package.deb sudo dpkg -i name_of_package.deb
``` ```
### Update Ubuntu offline: Steps ### 如何更新ubuntu
Open a terminal in the offline Ubuntu system and create a signature file using the following command in your home directory. 离线打开终端，且使用以下命令创建一个.sig签名文件
``` ```
sudo apt-offline set ~/offline-data.sig sudo apt-offline set ~/offline-data.sig
@ -56,15 +55,15 @@ sudo apt-offline set ~/offline-data.sig
[![Create the sig file][3]][4] [![Create the sig file][3]][4]
This creates a file containing the required package paths and details for download. 这个刚创建的签名文件中，包含下载所需的包路径和详细信息。
[![sig file contents][5]][6] [![sig file contents][5]][6]
Copy this .sig file to a USB and take it to a Ubuntu system with internet access. 把签名文件，拷到u盘中，再插到有网的ubuntu
Create a directory (see example below) to hold the downloaded packages in the Ubuntu system with an internet connection. 创建有一个目录去装这些文件
Open a terminal and run the following command to download the required packages. Remember to change the download directory and .sig file path as per your system. 打开一个终端，运行以下命令，记得根据你的系统，更改下载目录和.sig签名文件的路径
``` ```
apt-offline get -d ~/offline-data-dir offline-data.sig apt-offline get -d ~/offline-data-dir offline-data.sig
@ -72,11 +71,11 @@ apt-offline get -d ~/offline-data-dir offline-data.sig
[![Download the packages to install offline][7]][8] [![Download the packages to install offline][7]][8]
offline Ubuntu system 更新离线的Ubuntu
You should see the files are downloaded properly. Now copy the entire downloaded directory to the USB drive and plug it into the . 文件下载完，拷贝整个目录，再插到没联网的ubuntu
Then run the following command to install the downloaded packages to the offline system. Change the directory path as per your system. 然后运行以下命令将下载的包装到离线系统，记得根据你的系统更改目录路径
``` ```
sudo apt-offline install offline-data-dir/ sudo apt-offline install offline-data-dir/
@ -84,19 +83,18 @@ sudo apt-offline install offline-data-dir/
[![Installing packages - offline update ubuntu][9]][10] [![Installing packages - offline update ubuntu][9]][10]
The update should run smoothly if all goes well, and you should have an updated Ubuntu system. 如果一切顺利，你将获得一个更新完的ubuntu
You must repeat the steps above to keep your Ubuntu system up-to-date offline whenever you need to update. 重复食用以上步骤，就可以保持你的离线ubuntu是最新版
I hope this guide helps you to update your Ubuntu system in an offline mode. If you face any trouble, let me know in the comment box below.
希望以上教程能帮到你更新离线的ubnuntu系统，如果您遇到任何问题，请在下面的评论框中告诉我。
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
via: https://www.debugpoint.com/how-to-update-or-upgrade-ubuntu-offline-without-internet/ via: https://www.debugpoint.com/how-to-update-or-upgrade-ubuntu-offline-without-internet/
作者：[Arindam][a] 作者：[Arindam][a]
选题：[lkxed][b] 选题：[lkxed][b]
译者：[译者ID](https://github.com/译者ID) 译者：[littlebirdnest](https://github.com/译者ID)
校对：[校对者ID](https://github.com/校对者ID) 校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出