rails rbenv: rails: command not found

Question

I have recently moved from RVM to Rbenv and when attempting to execute rails I am getting an error like the one below

Pauls-Air:~ $ rails
rbenv: rails: command not found

The `rails' command exists in these Ruby versions:
  2.1.2

Solution 1

After installing a gem via the command line in a ruby version you have to execute rbenv rehash as described in the docs here and here

For example:

$ rbenv install 2.2.0
$ gem install bundler
$ rbenv rehash
$ gem install rails
$ rbenv rehash

Solution 2

You need to install Rails for each Ruby version within rbenv. Try running rbenv version, I might expect that 2.1.2 is not the ruby version in use for the current project (local version) or maybe your global version.

Solution 3

I ran into the same issue, but none of these other solutions (or any of the others I found elsewhere) worked. I was about to go back to RVM, so I decided to get rid of rbenv completely and it paved the way to the solution.

Try the following - it worked for me:

1. uninstalling rbenv, remove all references rbenv in your bash profile, and remove the remaining rbenv file folder and its contents.

2. Reinstall rbenv with homebrew.

3. Add it back to your bash profile:

   export PATH="$HOME/.rbenv/bin:/usr/local/bin:$PATH"
   eval "$(rbenv init -)"
   

4. Restart the shell:

   exec $SHELL -l
   

5. Check the path:

   echo $PATH
   

6. Install Rails:

   gem install rails
   

7. rbenv rehash

Note: I consulted this for part of this answer: https://www.codementor.io/tips/3732499178/solution-for-rbenv-rails-is-not-currently-installed-on-this-system-to-get-the-latest-version-simply-type

Solution 4

Try to set up your environment with 2.1.2 version running this command line in your terminal:

$ rbenv shell 2.1.2

It works to me

Solution 5

For me, I set up my environment with the listed "The `rails' command exists in these Ruby versions".

$ rbenv shell 2.1.2
$ rails -v

It works.

View more solutions

Comments

[user2101068]

Yes you are correct. That is insane! If RVM doesn't require doing the same that alone is justification to dump rbenv and switch to RVM. Does anybody know?

[eebbesen]

I found that uninstalling and re-installing rbenv solved this for me. I didn't need to remove rbenv-specifics from .zshrc, but I did manually delete ~/.rbenv after uninstalling and before re-installing rbenv via homebrew.

[stormdrain]

You can also add rails to the version you are trying to use: rbenv shell 2.7.1 then run gem install rails.