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My guess is your $ROS_ROOT environement variable is not set. You need to source setup.bash(or .sh) in order to set a lot of environement variables.

Try editting your .bashrc and adding the following line:

source "/opt/ros/fuerte/setup.bash

if you are using bash, or

source "/opt/ros/fuerte/setup.sh

otherwise.

My guess is your $ROS_ROOT environement variable is not set. You need to source setup.bash(or .sh) in order to set a lot of environement variables.

Try editting your .bashrc and adding the following line:

source "/opt/ros/fuerte/setup.bash"/opt/ros/fuerte/setup.bash"

if you are using bash, or

source "/opt/ros/fuerte/setup.sh"/opt/ros/fuerte/setup.sh"

otherwise.