rbenv: ruby: command not found

I am using rbenv with ruby version 1.9.1-p378 on the local dir.

Command ruby -v gives the following error:

rbenv: ruby: command not found

The `ruby' command exists in these Ruby versions:
2.0.0-p353

Any clue why this happens? The bundle, rails commands do not work either.

Command rbenv versions :

* 1.9.1-p378 (set by /home/user/Desktop/r1/noko1/.ruby-version)
2.0.0-p353

The complaint you get comes from rbenv. The fact that it's complaining shows that rbenv is set up and working.
Figure out what version of Ruby is needed to run the project. Either the project comes with a .ruby-version file in the root, or someone on the project will know and recommend that version to use.
If the version is not specified in a .ruby-version file, create the .ruby-version file in the project directory.
type ruby -v while in that directory. Is it OK? Then you have the version of Ruby installed that matches what your .ruby-version is asking for.
If the last command was not OK, then type rbenv install.

Now that Ruby is installed, you need to run your program. I'm assuming it comes with a Rakefile.

install the bundler tool: gem install bundler.
install the dependancies of the project: bundle install
run your project using the exact versions of libraries it specifies: bundle exec rails server

Try the following piece of code depending on the current version of rails that you have installed. In my case am using v2.3.3

rbenv global 2.3.3

It seems you need to rbenv install the ruby version you want to use, since only 2.0.0-p353 is available. See rbenv help.

来源：https://stackoverflow.com/questions/21275951/rbenv-ruby-command-not-found

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