As long as you don't proceed with step 1.3 on your computer you won't  
mess you current ROS installation up.

Note that if you do, the only thing that you'd have to do to bring it  
back is to change the ROS environment variables to point to your  
original installation, as Jack said.

Regards,
Miguel.

El 26/05/2010, a las 20:38, Narasimhan Rajagopal <narasimhan1990@yahoo.co.in 
 > escribió:

> now i don't want to screw my already installed ros and i don't want  
> two diff versions in my pc. so here's what i'm gonna do.
>
> 1. i follow Miguel Prada's advice and install using svn method (http://www.ros.org/wiki/ROS/Installation/Ubuntu/SVN 
>  ) and follow till step 1.2.
>
> 2. then i copy the directory of the source code to my usb drive
>
> 3. i'll copy the files from usb to the college pc(running debian)
>
> 4. i'll continue the steps after 1.2.
>
> 5. i delete the directory from my home pc.
>
> so if i follow these steps my original ros will be intact right? or  
> should i run some commands to set it right.
>
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