Can't install rmagick gem on Ubuntu 13.04

Question

When I try to install rmagic with:

gem install rmagic

it gives error:

Building native extensions.  This could take a while...
E         


        

Answer 1

Try clearing your apt repository and removing any broken packages first:

sudo apt-get update
sudo apt-get autoclean
sudo apt-get clean
sudo apt-get autoremove

If the system identifies any broken packages, forcefully remove them (replace package_name with your own):

sudo dpkg --remove -force --force-remove-reinstreq package_name

Then reinstall any missing packages again.