Error during Installing Rails in Ubuntu 10.04

Question

First I installed rvm for multi-user using script

 \curl -L https://get.rvm.io | sudo bash -s stable

and I added users to rvm group.

and rvm seems worked fine. so I installed ruby 1.9.3 and set 1.9.3 as default

and now I tried to install rails with command

 gem install rails

It seems worked fine, but when fetching json-1.7.6.gem and an error occurs.

 ERROR: Error installing rails: ERROR: Failed to build gem native extension. /usr/local/rvm/rubies/ruby-1.9.3-p374/bin/ruby extconf.rb creating Makefile make sh: make: Permission denied Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p374/gems/json-1.7.6 for inspection. Results logged to /usr/local/rvm/gems/ruby-1.9.3-p374/gems/json-1.7.6/ext/json/ext/generator/gem_make.out

So I thought it would be related with permission, so I tried

 sudo gem install rails

but then this error occurs.

 sudo: gem: command not found

What should I do?

Nazar · Accepted Answer · 2013-02-04 10:41:02Z

use sudo as follows..

sudo gem install rails

Updated Answer:

our $PATH variable needs to include the exact path to your Ruby's bin directory. Adding a directory to the PATH does not include it's subfolders. Try adding the bin directory via:

export PATH=$PATH:/home/adam/.gem/ruby/1.8/bin

or if you installed the gem using sudo:

export PATH=$PATH:/usr/lib/ruby/gems/1.8/bin

You might want to add this to your .bashrc file, so that you don't have to set this manually every time your open up a new bash.

jvnill · Accepted Answer · 2013-02-04 08:47:20Z

you can use rvmsudo to run sudo commands. But you should really be using Gemfiles to install gems using Bundler.

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