roscd stopped working

edit

I just did:

sudo apt-get autoremove libeigen3-dev

Afterwards roscd is not working anymore:

roscd kuka_arm
No command 'roscd' found, did you mean:
 Command 'rosco' from package 'python-rosinstall' (universe)
roscd: command not found

Yes I sourced my workspace. and I also did:

rosdep init
rosdep update
source /opt/ros/kinetic/setup.bash

So I just also found out that ros-kinetic-cv-bridge requires libeigen3-dev. That is why if you do

sudo apt-get autoremove libeigen3-dev

cv-bridge will also be uninstalled. However all the packages I unfortunately also deleted when doing autoremove command above I could reinstall. But roscd is still not working...