Old version of Ruby overriding updated version

Question

Ruby noob here. I installed Ruby 1.9.3 but it still defaults to my pre-installed system version (1.8). For example:

$ gem install rails
ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/1.8 directory.

I used rbenv to try to set the global version to 1.9.3

$ rbenv global 1.9.3-p448

But still, I have this issue and when I check the version, I get 1.8:

$ ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]

How did you install Ruby 1.9.3 ? – Aurélien Gasser Nov 22 '13 at 01:10 — Aurélien Gasser, Nov 22 '13 at 01:10

score 2 · Answer 1 · answered Nov 22 '13 at 04:22

Fixed it by adding the following to .bash_profile:

export PATH="$HOME/.rbenv/bin:$PATH"

Also, this line is needed too (though it was already there):

eval "$(rbenv init -)"

For info on modifying bash_profile, see:

http://redfinsolutions.com/blog/creating-bashprofile-your-mac

score 0 · Answer 2 · answered Nov 22 '13 at 01:09

0

Use rehash command for rbenv after setting a version.

$ rbenv rehash

https://github.com/sstephenson/rbenv#rbenv-rehash

answered Nov 22 '13 at 01:09

LukeS

481
4
14

score 0 · Answer 3 · answered Nov 22 '13 at 01:30

0

Command gem use System gem command, default is superuser. I unused rbenv, but get rbenv path add to environment variables PATH at first, I think is work

answered Nov 22 '13 at 01:30

jame2981

51
1
6

Old version of Ruby overriding updated version

3 Answers3