In a linux VM you can use rvm.

Rvm supports multiple versions and gemsets. Depending on your GemFile it
will pick up the right version.
On Aug 9, 2015 9:40 AM, "Elizabeth McGurty" <[email protected]> wrote:

> Thanks, thanks... I have VMs on my machine.  But specific to the purpose
> of differences in matters stated above.  Am I missing some point in using
> VM toward that purpose?
> Liz
>
> On Sunday, August 9, 2015 at 12:01:40 AM UTC-4, Ganesh Ranganathan wrote:
>>
>> Yes I mean virtual machines.  To install a VM
>>
>> First the iso file has to be downloaded from Ubuntu site.
>> Then VirtualBox software has to be downloaded
>> While creating a new VM, the iso has to be added in the optical drive
>> section
>> So after the VM starts, it takes you into Ubuntu installation and the
>> process is pretty easy.
>> I am sure there are detailed docs on the net for this.
>>
>> A 60 GB virtual hard disk would suffice for development.
>>
>> Thanks,
>> Ganesh
>>
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