Error installing rails (no write Permissions)

Question

When attempting to install rails, I get the following:

$ gem install ruby
Fetching: ruby-0.1.0.gem (100%)
ERROR:  While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/1.8 directory.

I installed ruby 1.9.3 with rbenv and set it to the global version:

rbenv global 1.9.3-p448

So I'm not sure why it's trying to access the system version...?

I'd recommend using rvm.io for managing a separate Ruby version. — Snarf
– Snarf, Commented Nov 22, 2013 at 0:29

Ben Davidow · Accepted Answer · 2013-11-22 04:24:31Z

2

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

answered Nov 22, 2013 at 4:24

Ben Davidow

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