Can I install gems with apt-get on Ubuntu?

Ubuntu now have rubygems as a package

For Ubuntu 12:

sudo apt-get install rubygems

For Ubuntu 14.04:

sudo apt-get install rubygems-integration

On Ubuntu 16.04 and Ubuntu 18.04, both sudo apt-get install rubygems and sudo apt-get install rubygems-integration failed for me. Instead, I had to do this:

sudo apt-get install ruby-dev

If on Ubuntu 14.04 try below

sudo apt-get install rubygems-integration