What is JeOS (just enough operating system)? - Definition from WhatIs.com


JeOS (just enough operating system)

Part of the Virtualization glossary:

What is JeOS?

JeOS (just enough operating system) is a highly customized operating system built for a specific application. The acronym is pronounced "juice."

JeOS builds are popular with software vendors and developers who are creating test systems or virtual appliances.  A virtual appliance is simply a virtual machine (VM) image file that has a preconfigured operating system (OS) and a single application. (The preconfigured OS is the JeOS.) 

A JeOS only includes the bits of a full-blown operating system that are required to support the application and any other third-party components that are packaged in the appliance.  Configuring the JeOS and the application together in a single package helps avoid installation issues and errors.


Learn More About IT:

Ubuntu JeOS is a lightweight version of the Ubuntu Server operating system.

Learn how to configure Ubuntu JeOS as a Secure Shell (SSH) server.

Wikipedia has an entry about JeOS.

See also: skinny Linux, lightweight

This was last updated in March 2011
Posted by: Margaret Rouse

Related Terms


  • VMware vSphere Loyalty Program

    - The VMware vSphere Loyalty Program is a program that allows VMware EVO:RAIL users to apply vSphere Enterprise Plus licenses to their VMware EVO:RAIL appliances instead of having to pay for double. (SearchVMware.com)

  • Citrix XenServer

    - Citrix XenServer competes with VMware vSphere and Microsoft Hyper-V in the server virtualization and management platform market. (SearchServerVirtualization.com)

  • hardware virtualization

    - Hardware virtualization is the abstraction of computing resources from the software that uses those resources. Today, hardware virtualization is often called server virtualization or, simply, virtu... (SearchVMware.com)


  • Virtualization

    - Terms related to virtualization, including definitions about virtualization technologies and words and phrases about server virtualization, desktop virtualization and storage virtualization.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About JeOS (just enough operating system)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment



    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.