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http://blog.csdn.net/tanhuifang520
ros安装存在的包时提示E: Unable to locate
一、在安装某pack时提示定位不到
输入sudo apt-get install ros-indigo-object-然后按tab键也不能补全
二、sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu trusty main" > /etc/apt/sources.list.d/ros-latest.list'
三、wget https://raw.githubusercontent.com/ros/rosdistro/master/ros.key -O - | sudo apt-key add -
四、sudo apt-get update
五、sudo apt-get install ros-indigo-object-recognition-msgs -y
即可成功安装了