ERROR: Gem bundler is not installed, run `gem install bundler` first - ruby

Question

Hi I've been having a probably trying to install the Ruby gem bundle. I follow the directions gem install bundle after I receive this message, but it still doesn't work when I type bundle -v. I also type
which bundle and receive
/Users/edmundmai/.rvm/bin/bundle
so it exists!! So why does it not work!! Is there something wrong with the mysterious $PATH that I don't get? (I'm a noob).
Here's my .bash_profile:
PATH=$PATH:~/bin
export PATH
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function
Here's my .bashrc :
PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
Here's my gem env:
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.24
- RUBY VERSION: 1.9.3 (2012-04-20 patchlevel 194) [x86_64-darwin11.3.1]
- INSTALLATION DIRECTORY: /Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#rails3tutorial2ndEd
- RUBY EXECUTABLE: /Users/edmundmai/.rvm/rubies/ruby-1.9.3-p194/bin/ruby
- EXECUTABLE DIRECTORY: /Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#rails3tutorial2ndEd/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-11
- GEM PATHS:
- /Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#rails3tutorial2ndEd
- /Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#global
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- "install" => "--no-rdoc --no-ri"
- "update" => "--no-rdoc --no-ri"
- REMOTE SOURCES:
- http://rubygems.org/
echo $PATH
/Users/edmundmai/.rvm/bin:/Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#rails3tutorial2ndEd/bin:/Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#global/bin:/Users/edmundmai/.rvm/rubies/ruby-1.9.3-p194/bin:/Users/edmundmai/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/Users/edmundmai/bin:/Users/edmundmai/bin
UPDATE
So after trying to go through the RoR tutorial again, I repeated a few of the steps from earlier in the chapter in one of my two terminal windows (let's call them Terminal #1 and Terminal #2). Terminal #2 still doesn't work (the command line isn't on any directory, just the default directory) while Terminal #1 (at my sample_app directory) works. I think rvm get head && rvm reload might be the key? But does that mean I have to run that every time I open my terminal? Check out my terminal #1 commands for before and after (I deleted some of the output so that it would be more clear what my input lines were):
Edmunds-MacBook-Pro:sample_app edmundmai$ bundle -v
ERROR: Gem bundler is not installed, run `gem install bundler` first.
Edmunds-MacBook-Pro:sample_app edmundmai$ gem install
ERROR: While executing gem ... (Gem::CommandLineError)
Please specify at least one gem name (e.g. gem build GEMNAME)
Edmunds-MacBook-Pro:sample_app edmundmai$ rvm -v
rvm 1.15.8 (master) by Wayne E. Seguin <wayneeseguin#gmail.com>, Michal Papis <mpapis#gmail.com> [https://rvm.io/]
Edmunds-MacBook-Pro:sample_app edmundmai$ rspec spec/
No DRb server is running. Running in local process instead ...
........
Finished in 0.36709 seconds
8 examples, 0 failures
Randomized with seed 59500
Edmunds-MacBook-Pro:sample_app edmundmai$ subl .
Edmunds-MacBook-Pro:sample_app edmundmai$ bundle install --binstubs=./bundler_stubs
Using rake (0.9.2.2)
...
...
(**list of stuff)
Using uglifier (1.2.3)
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
Edmunds-MacBook-Pro:sample_app edmundmai$ bundle show bundler
/Users/edmundmai/.rvm/gems/ruby-1.9.3-p194#rails3tutorial2ndEd/gems/bundler-1.2.0
I'm extremely unclear as to what the $PATH does. If you guys need any more info, feel free to tell me and I'll provide it.

Answer 1

I think this is the problem: You have bundler installed to a specific gemset, which is why it's only available when you're in your app's directory (I'm assuming there's a .rvmrc file in there).
You have a few options:
Install bundler to a global gemset. rvm gemset use global && gem install bundler
If you have Homebrew installed, just do brew install ruby and avoid rvm altogether. (There's also rbenv and ry as alternatives to rvm, but I just use 1.9.3 across all my apps, so Homebrew is fine.)
For reference, $PATH is a shell environmental variable containing a list of directories that hold executables (e.g., echo, ls, vim, etc.). It's intrinsic to shells.

Answer 2

Sometimes it is just that you are not sourcing rvm correctly, because you are not in a login shell (using screen?).
Type
source ~/.rvm/scripts/rvm
And use any bundle command.

Answer 3

Add the following line to ~/.bashrc file
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function
then reload the file:
$ source ~/.bashrc

Answer 4

Even i had same problem,
In server rvm was not selected as default.So
rvm use 1.9.3 --default
gem install bundler
solved my problem
(Problem occurs only when using rvm)

Answer 5

If you are using rvm create a separate gemset, which are self-contained bundles of gems.
rvm use 1.9.3#myApplicationNameHere --create --default
myApplicationNameHere = change this to your application name
create = creates a gemset
default = means use this version of ruby and gemset as default
Here is the link to the rvm site and the relevant section https://rvm.io/gemsets/basics/