Ruby install for a user is different from sudo?

Question

I need to have at least version 1.9 installed in the system. However, when I run ruby -v in "normal mode" and "sudo mode", they are different:

$ ruby -v
ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]
$ sudo ruby -v
ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

If I do which ruby:

$ which ruby
/usr/local/bin/ruby
$ sudo which ruby
/usr/bin/ruby

How do I install Ruby so that it's the same for both of them?

Answer 1

For short you can place path /usr/local/bin/ruby for superuser before /usr/bin/ruby.

$sudo echo $PATH

will show you current state of art