On 09/02/10 17:17, Brian Gerkey wrote: > If you don't fix the permissions as Ugo suggests, rospack will still > work correctly, but it will be slower than it could be, because it > can't cache package locations. Depending on the size and nature of > your ROS installation, it can be important to enable caching, because > rospack is used to look up package locations very frequently, > including at run time. > > brian. > > Hi, That actually raises a question: what is the recommended procedure on a read-only system. Is it better to put the cache on a tmpfs mount or is it possible to generate the cache once and for all, and use it afterward? Thanks > On Thu, Sep 2, 2010 at 7:56 AM, Ugo Cupcic wrote: > >> Hey, >> >> You should probably check your permissions for the .ros folder? (ls -l >> ~/.ros) and modify them if you don't have write access or if you don't >> own the folder. >> >> Cheers, >> >> Ugo >> >> On 02/09/10 14:04, yimeiliao wrote: >> >>> hallo, >>> >>> i just installed ros on my ubuntu 10.04 netbook version. when i tried >>> "rospack find roscpp" i got an error message >>> >>> [rospack] Unable to create temporary cache file >>> /home/waxwings/.ros/.rospack_cache.jmdWZ9: Permission denied >>> /home/waxwings/ros/ros/core/roscpp >>> >>> is this a problem? >>> >>> Regards >>> yimei >>> >> -- >> Ugo Cupcic | Shadow Robot Company | ugo@shadowrobot.com >> Software Engineer | 251 Liverpool Road | >> need a Hand? | London N1 1LX | +44 20 7700 2487 >> http://www.shadowrobot.com/hand/ @shadowrobot >> >> _______________________________________________ >> ros-users mailing list >> ros-users@code.ros.org >> https://code.ros.org/mailman/listinfo/ros-users >> >> > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > -- Dr. Cedric Pradalier http://www.asl.ethz.ch/people/cedricp