问题
Hi hope there is someone out there that can help me, have been struggling with this for quite some time now. Im running Ubuntu 10 on the dev machine wich had ruby 1.8 on it, wich I removed. I installed Ruby 1.9.3 and rails3 using RVM and this tutorial http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you/
when I type ruby -v I get
ruby 1.9.3p125 (2012-02-16 revision 34643) [i686-linux]
wich seems correct
I created a new test app using
rails new mysite
wich created the new app successfully then I
cd mysite
and created a gemset
rvm gemset create 'rails3'
then I used this inside the /mysite/ folder
rvm use 1.9.3@rails3 --rvmr
Using /usr/local/rvm/gems/ruby-1.9.3-p125 with gemset rails3
but the problem arises when i try to run it
root@server-pc:/var/www/mysite# rails s
-bash: /usr/bin/rails: /usr/bin/ruby1.8: bad interpreter: No such file or directory
EDIT1:
root@server-pc:/var/www/mysite# which ruby
/usr/local/rvm/rubies/ruby-1.9.3-p125/bin/ruby
回答1:
log in as root user
remove old ruby
list ruby packeges
dpkg -l | grep ruby
then remove all ruby packeges
aptitude purge <package name>
if you have rvm installed
rvm remove all
then
rvm implode
or
rvmsudo rvm implode
install ruby
still logged in as root
install all of the necessary tools and libraries
apt-get install curl git-core build-essential zlib1g-dev libssl-dev libreadline5-dev
install rvm
bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)
Then add this line as the last line in your .bashrc:
nano ~/.bash_profile
if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then source "$HOME/.rvm/scripts/rvm" ; fi
test RVM install
rvm notes
Next, you can begin ruby 1.9.2 installation by running
rvm install 1.9.2
The install will take up to several minutes and once it completes you have to set ruby 1.9.2 as the default version
rvm --default ruby-1.9.2
test your new ruby install ruby -v
install Rails 3
gem install rails
If you want to get a quick database up and running with sqlite, then you’ll need to sqlite3 and the libsqlite3-dev packages
apt-get install sqlite3 libsqlite3-dev
gem install sqlite3-ruby
create new app
rails new testapp
cd testapp
Make sure you are in your test app directory and run
rails s
Open your browser at http://localhost:3000
回答2:
well, I believe this line:
-bash: /usr/bin/rails: /usr/bin/ruby1.8
means that you already have a /usr/bin/rails binary which is using ruby1.8 interpreter. Try moving it somewhere:
mv /usr/bin/rails /usr/bin/rails-1.8
then go to your project directory, and bundle install.
if you already have the rails bundled, try reinstalling the gems.
来源：https://stackoverflow.com/questions/9563656/ubuntu-10-ruby-1-9-rails-3-not-working