What is the preferred/recommend way of running two version of ubuntu side by side

Posted by GreyGeek on Ask Ubuntu See other posts from Ask Ubuntu or by GreyGeek
Published on 2014-06-05T03:18:57Z Indexed on 2014/06/05 3:38 UTC
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12.04

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14.04

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virtualization

I am running 14.04, but I need to run some corporate software/scripts that have been specifically designed for 12.04. I am aware of virtual box/vmware for full virtualization but I am looking for something more lightweight (on my windows machine both come at a significant cost in battery life) closer to os virtualization level. Ideally, I would like something like windows 7/8 compatibility mode: the ability to run a program as if I were on 12.04.

Does Ubuntu/Linux have such mechanism?

What is the preferred way of running programs/scripts designed for an older version of Ubuntu?

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