Ignoring GEM because its extensions are not built

Question

On both my work and home computers, I recently upgraded Ruby to 2.3.1, using ruby-install. I use chruby as my Ruby switcher.

I started seei

Answer 1

This is an old thread, but I just came across this issue myself.

You don't need to restart your machine, you just need to refresh your environment, you can do this with the rehash command:

rehash

From the man page: rehash command re-computes the internal hash table of the contents of directories listed in the path environmental variable to account for new commands added.