Narasimhan,
What you put down will work.  The information can be found a little more
directly by doing the following.

{{{
$> rosmsg package sensor_msgs
sensor_msgs/PointCloud
sensor_msgs/RegionOfInterest
sensor_msgs/JointState
sensor_msgs/CameraInfo
sensor_msgs/Imu
sensor_msgs/LaserScan
sensor_msgs/Image
sensor_msgs/ChannelFloat32
sensor_msgs/CompressedImage
}}}

Tully

On Mon, May 31, 2010 at 5:57 AM, Narasimhan <narasimhan1990@yahoo.co.in>wrote:

>
> this question was asked in the post tutorial questionnaire.
> What ROS messages are defined in the sensor_msgs package? write the command
> line input and the list of messages
>
> my answer was
> rosls sensor_msgs/msg
>
> what is the answer for this question?
>
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-- 
Tully Foote
Systems Engineer
Willow Garage, Inc.
tfoote@willowgarage.com
(650) 475-2827