Re: [ros-users] error massage with rospack

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<ugo@shadowrobot.com> 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

>>
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