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2014-01-30 22:32:28 -0500 answered a question How to get the line "source devel/setup.bash" to run after every time you catkin_make?

1) Either you must run the above source command each time you open a new terminal window

2) or add it to your .bashrc file as follows.

echo "source ~/catkin_ws/devel/setup.bash" >> ~/.bashrc

I found the above instruction from this website: https://github.com/MST-Robotics/MST_R...

2013-12-08 22:48:48 -0500 commented answer Unmet dependencies in apt-get install ros-hydro-desktop-full

Thanks. It helped to realize that I had strange dependency problem (many of them), so I had to completely remove ubuntu, and reinstall.

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2013-12-03 02:39:32 -0500 asked a question Unmet dependencies in apt-get install ros-hydro-desktop-full

Hi,

I am trying to install Hydro on Ubuntu 12.04. When I enter sudo apt-get install ros-hydro-desktop-full, I am getting the following error messages.

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ros-hydro-desktop-full : Depends: ros-hydro-desktop but it is not going to be installed
                          Depends: ros-hydro-mobile but it is not going to be installed
                          Depends: ros-hydro-perception but it is not going to be installed
                          Depends: ros-hydro-simulators but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I tried apt-get update, apt-get upgrade, and apt-get -f install, but I am still getting the same error.

Can anybody know how to solve this problem?

When I use aptitude instead I got the following result: (it is really long..)

The following NEW packages will be installed:
  collada-dom-dev{a} collada-dom2.4-dp-base{a} collada-dom2.4-dp-dev{a} 
  docgenerator{a} ffmpeg{a} fltk1.3-doc{a} fluid{a} gazebo{a} 
  generatorrunner{a} hddtemp{a} libapiextractor-dev{a} libapiextractor0.10{a} 
  libasound2-dev{ab} libassimp-dev{a} libassimp2{a} libatk1.0-dev{a} 
  libav-tools{a} libavcodec-dev{a} libavcodec-extra-53{ab} libavdevice53{a} 
  libavfilter2{a} libavformat-dev{a} libavformat-extra-53{ab} 
  libavutil-dev{a} libavutil-extra-51{ab} libbullet{a} libbullet-dev{a} 
  libcaca-dev{a} libcairo2-dev{ab} libcegui-mk2-0.7.5{a} libcegui-mk2-dev{a} 
  libcppunit-1.12-1{a} libcppunit-dev{a} libcurl4-openssl-dev{a} 
  libdevil-dev{a} libdevil1c2{a} libflann-dev{a} libflann1{a} 
  libfltk-cairo1.3{a} libfltk-forms1.3{a} libfltk-gl1.3{a} 
  libfltk-images1.3{a} libfltk1.1-dev{ab} libfltk1.3{a} libfltk1.3-dev{ab} 
  libfontconfig1-dev{ab} libfreeimage-dev{a} libfreeimage3{a} 
  libfreetype6-dev{ab} libgdk-pixbuf2.0-dev{a} libgenrunner-dev{a} 
  libgenrunner0.6{a} libgeos-3.2.2{a} libgeos-c1{a} libgl2ps-dev{a} 
  libgl2ps0{a} libglib2.0-dev{ab} libgnutls-dev{ab} libgtk2.0-dev{a} 
  libhdf5-serial-1.8.4{a} libidn11-dev{a} libjasper-dev{a} libjpeg-dev{a} 
  libjpeg-turbo8-dev{ab} libjpeg8-dev{a} libjs-sphinxdoc{a} 
  libjs-underscore{a} liblcms1-dev{a} liblodo3.0{a} liblua5.1-0-dev{a} 
  libmng-dev{a} libnetcdf-dev{a} libnetcdf6{a} libodbc1{a} libogg-dev{a} 
  libogre-1.7.4{a} libogre-dev{a} libois-1.3.0{a} libopencv-core2.3{a} 
  libopencv-highgui2.3{a} libopencv-imgproc2.3{a} libopenjpeg2{a} 
  libopenni-dev{a} libopenni-sensor-primesense0{a} libopenni0{a} 
  libpango1.0-dev{ab} libpcl-1.7-all{a} libpcl-1.7-all-dev{a} 
  libpcl-1.7-bin{a} libpcl-1.7-doc{a} libpcl-apps-1.7{a} 
  libpcl-apps-1.7-dev{a} libpcl-common-1.7{a} libpcl-common-1.7-dev{a} 
  libpcl-features-1.7{a} libpcl-features-1.7-dev{a} libpcl-filters-1.7{a} 
  libpcl-filters-1.7-dev{a} libpcl-geometry-1.7-dev{a} libpcl-io-1.7{a} 
  libpcl-io-1.7-dev{a} libpcl-kdtree-1.7{a} libpcl-kdtree-1.7-dev{a} 
  libpcl-keypoints-1.7{a} libpcl-keypoints-1.7-dev{a} libpcl-octree-1.7{a} 
  libpcl-octree-1.7-dev{a} libpcl-outofcore-1.7{a} 
  libpcl-outofcore-1.7-dev{a} libpcl-people-1.7{a} libpcl-people-1.7-dev{a} 
  libpcl-recognition-1.7{a} libpcl-recognition-1.7-dev{a} 
  libpcl-registration-1.7{a} libpcl-registration-1.7-dev{a} 
  libpcl-sample-consensus-1.7{a} libpcl-sample-consensus-1.7-dev{a} 
  libpcl-search-1.7{a} libpcl-search-1.7-dev{a} libpcl-segmentation-1.7{a} 
  libpcl-segmentation-1.7-dev{a} libpcl-surface-1.7 ...
(more)