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Because I found that the latest version of ROS is coming(electric).
If I want to try that version,but also use the origin version of ROS.
Is they will conflict?
Or should I just upgrade to the latest version?
I have tried 'sudo apt-get dist-upgrade'. Is this instruction will check any version of ROS could be update? And if not,it just upgrade all the other packages?
Thank you~
Your ROS installations won't interfere with each other, if using the precompiled .deb packages or installing from source into different directories. E.g. diamondback will install into /opt/ros/diamondback, whereas electric will install into /opt/ros/e-turtle (or "electric", whatever the actual directory will be). Once you source one "setup.bash" you will run (and compile) in that ROS version only.
So, apt-get dist-upgrade will not upgrade your ROS installation into a new distribution as the package prefixes are different.
In principle you can have multiple versions installed at the same time and this will work, as long as you take care that you only use one version (and packages for that version) at any time. This means the ROS_PACKAGE_PATH, setup.bash and everything else of only the ROS version you want to use might be active. Making a mistake here can lead to all sorts of errors. It's recommended to use only one version (a stable one) though, unless you have special needs.
I recommend you to continue learning with the current diamondback release and don't change until electric is stable.
Asked: 2011-07-20 01:41:53 -0500
Seen: 3,879 times
Last updated: Jul 20 '11
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