The quickest way of installing Ruby on Rails with rvm is to run the following command as a regular user:
\curl -sSL https://get.rvm.io | bash -s stable --rails
You will be prompted for your regular user's password as part of the installation procedure.
Let's go over exactly what's happening here.
The \curl portion uses the curl web grabbing utility to grab a script file from the rvm website. The backslash that leads the command ensures that we are using the regular curl command and not any altered, aliased version.
The -s flag indicates that the utility should operate in silent mode, the -S flag overrides some of this to allow curl to output errors if it fails. The -L flag tells the utility to follow redirects.
The script is then piped directly to bash for processing. The -s flag indicates that the input is coming from standard in. We then specify that we want the latest stable version of rvm, and that we also want to install the latest stable Rails version, which will pull in the associated Ruby.
Following a long installation procedure, all you need to do is source the rvm scripts by typing:
source ~/.rvm/scripts/rvm
You should now have a full Ruby on Rails environment configured.
Installing Specific Ruby and Rails Versions:
If you need to install specific versions of Ruby for your application, you can do so with rvm like this:
rvm install ruby_version
After the installation, we can list the available Ruby versions we have installed by typing:
rvm list
We can switch between the Ruby versions by typing:
rvm use ruby_version
We can use various Rails versions with each Ruby by creating gemsets and then installing Rails within those using the normal gem commands:
rvm gemset create gemset_name # create a gemset
rvm ruby_version@gemset_name # specify Ruby version and our new gemset
gem install rails -v rails_version # install specific Rails version
The gemsets allow us to have self-contained environments for gems and allow us to have multiple environments for each version of Ruby that we install.
\curl -sSL https://get.rvm.io | bash -s stable --rails
You will be prompted for your regular user's password as part of the installation procedure.
Let's go over exactly what's happening here.
The \curl portion uses the curl web grabbing utility to grab a script file from the rvm website. The backslash that leads the command ensures that we are using the regular curl command and not any altered, aliased version.
The -s flag indicates that the utility should operate in silent mode, the -S flag overrides some of this to allow curl to output errors if it fails. The -L flag tells the utility to follow redirects.
The script is then piped directly to bash for processing. The -s flag indicates that the input is coming from standard in. We then specify that we want the latest stable version of rvm, and that we also want to install the latest stable Rails version, which will pull in the associated Ruby.
Following a long installation procedure, all you need to do is source the rvm scripts by typing:
source ~/.rvm/scripts/rvm
You should now have a full Ruby on Rails environment configured.
Installing Specific Ruby and Rails Versions:
If you need to install specific versions of Ruby for your application, you can do so with rvm like this:
rvm install ruby_version
After the installation, we can list the available Ruby versions we have installed by typing:
rvm list
We can switch between the Ruby versions by typing:
rvm use ruby_version
We can use various Rails versions with each Ruby by creating gemsets and then installing Rails within those using the normal gem commands:
rvm gemset create gemset_name # create a gemset
rvm ruby_version@gemset_name # specify Ruby version and our new gemset
gem install rails -v rails_version # install specific Rails version
The gemsets allow us to have self-contained environments for gems and allow us to have multiple environments for each version of Ruby that we install.