Ubuntu 18.04 LTS release is great and you can run it on your Server because it is quite stable.
Here at Ibmi Media, as part of our Server Management Services, we regularly help our Customers to perform Software Packages Installation tasks on Ubuntu Linux System.
In this context, you can download Ubuntu 18.04 LTS iso file easily by following in instructions given below.
Also, you can check other flavors of Ubuntu 18.04 from Ubuntu official website.
Ubuntu 18.04 LTS Download Links
From the below links, you can download ISO images of Ubuntu Server and Desktop editions.
Download Ubuntu 18.04 via Command Line
You can download any remote file suing wget or curl command line utility. Its simple to use. We use curl to download file:
### Ubuntu 18.04 Desktop Edition
curl -O http://releases.ubuntu.com/18.04.2/ubuntu-18.04.2-desktop-amd64.iso
### Ubuntu 18.04 Server Edition
curl -O http://releases.ubuntu.com/18.04.2/ubuntu-18.04.2-live-server-amd64.iso
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