rails_has_elegance rails_has_elegance - 1 year ago 69
Ruby Question

upgrade ruby version without rvm

I just did

apt-get install ruby.1.9.1
, installing it successfully. Now when I do
ruby -v
, it's still 1.8.7. Why won't it use the newly installed version? I don't know why, but I can't find anything via google on how to manage ruby versions without rvm. I know rvm is awesome, but in this case it has to be without rvm.

Can anybody help me?

Answer Source

This is just an example of how to resolve this issue. The paths and file names might be different on your system, but you should get the idea from here:

# First locate the original ruby
> which ruby
/usr/bin/ruby   # <- Your path might be different

# Then locate ruby19
> which ruby19

# Move the old ruby out of the way
> mv /usr/bin/ruby /usr/bin/ruby_old

# Link ruby to the new ruby (ruby19)
# ln -s is used to create a new symbolic link. See "man ln" for more info.
> cd /usr/bin
> ln -s ruby19 ruby

Now you should have:

/usr/bin/ruby_old                 # The old executable
/usr/bin/ruby -> /usr/bin/ruby19  # The new link
/usr/bin/ruby19                   # The new executable
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