E: Unable to locate package ros-hydro-ros-tutorials

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following the ros tutorial [here](http://wiki.ros.org/ROS/Tutorials/NavigatingTheFilesystem). 
When I run The pre-requisites command  $ sudo apt-get install ros-<distro>-ros-tutorials, the following command is received on the terminal.

adil@adil-HP-Pavilion-g6-Notebook-PC:~/catkin_ws$ sudo apt-get install ros-hydro-ros-tutorials
Reading package lists... Done
Building dependency tree       
Reading state information... Done

Any suggestions on how to proceed from this.