问题
I use rvm to manage different rubies and their gemsets. My shell is zsh with oh-my-zsh configured with basic settings. Enabled oh-my-zsh plugins are ruby, rails, osx, and git. Here\'s the command I used to install ruby-1.8.7 and rails-3.0.7.
rvm install 1.8.7
rvm use 1.8.7
gem install rails -v=3.0.7
and then I typed rails and got:
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your \"rails\" command.
I\'ve tried more thorough installs also, Like reinstall rubygems after switching to ruby-1.8.7, or create a completely new gemset, but with no luck.
Here\'s the rvm info:
ruby-1.8.7-p352@rails:
system:
uname: \"Darwin yicai.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64\"
bash: \"/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)\"
zsh: \"/bin/zsh => zsh 4.3.9 (i386-apple-darwin10.0)\"
rvm:
version: \"rvm 1.8.6 by Wayne E. Seguin (wayneeseguin@gmail.com) [https://rvm.beginrescueend.com/]\"
ruby:
interpreter: \"ruby\"
version: \"1.8.7\"
date: \"2011-06-30\"
platform: \"i686-darwin10.8.0\"
patchlevel: \"2011-06-30 patchlevel 352\"
full_version: \"ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-darwin10.8.0]\"
homes:
gem: \"/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails\"
ruby: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352\"
binaries:
ruby: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/ruby\"
irb: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/irb\"
gem: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/gem\"
rake: \"/Users/nil/.rvm/bin/rake\"
environment:
PATH: \"/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails/bin:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global/bin:/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin:/Users/nil/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/sbin\"
GEM_HOME: \"/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails\"
GEM_PATH: \"/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global\"
MY_RUBY_HOME: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352\"
IRBRC: \"/Users/nil/.rvm/rubies/ruby-1.8.7-p352/.irbrc\"
RUBYOPT: \"\"
gemset: \"rails\"
and the gem version is 1.8.10, the latest.
回答1:
I had this problem today. Not completely related to your question, but since this page is what comes up in Google when I search for "Rails is not currently installed on this system", I thought I would add my answer:
What happened is that I was using ruby 1.9.2 with rails for a while, but then I needed to use ruby 1.8.7 to run some other script that I found.
Afterwards, I wanted to change by system back to using 1.9.2, and that's where the problem started:
$ rvm list
=> ruby-1.8.7-p352 [ x86_64 ]
ruby-1.9.2-p290 [ x86_64 ]
$ rvm use 1.9.2
I thought that would do the trick. But no, that gives me the "Rails is not currently installed on this system" message.
What I had forgotten is that I had configured rails using an rvm gemset. So I needed to specify the correct gemset when I was selecting which ruby version to make active.
$ rvm gemset list_all
gemsets for ruby-1.8.7-p352 (found in /Users/asgeo1/.rvm/gems/ruby-1.8.7-p352)
global
gemsets for ruby-1.9.2-p290 (found in /Users/asgeo1/.rvm/gems/ruby-1.9.2-p290)
global
rails31
$ rvm use ruby-1.9.2-p290@rails31
That did the trick.
回答2:
If you're running a rails command immediately after installing rails, you will need to restart your terminal before your commands will be recognized.
回答3:
I had the same issue and found that RVM was not showing as installed either if I tried the rvm command. All it took to fix both problems was running this command in the terminal
$ source ~/.rvm/scripts/rvm
回答4:
Mac OS X, rbenv, and rails
I was getting the exact same issue but with rbenv rather than rvm. After verifying a correct .bash_profile.
.bash_profile
export PATH="$HOME/.rbenv/bin:/usr/local/bin:$PATH"
eval "$(rbenv init -)"
Restart the shell
exec $SHELL -l
Check the path
echo $PATH
Finally
I repeatedly installed and uninstalled rails but it was never placed in the .rbenv/bin directory after rbenv rehash. In the end I did a find . -name rails and uninstalled every gem that was returned and uninstalled rails. Then:
$ gem install rails
$ rbenv rehash
$ which rails
/Users/palmerc/.rbenv/shims/rails
回答5:
Restart your terminal and then re-run your rails command
回答6:
Rails is not reporting that it isn't installed. Your Debian system is telling you that rails isn't installed. One thing about rvm is that it relies on some complicated bash shell scripting and you sometimes need to start a fresh shell for changes to appear. You should also make sure that the correct rvm shell commands were added to your .zshrc file. Also check your path to make sure the ~/.rvm/gems/... path in included.
回答7:
I ran into this issue using rbenv. Turns out gem install rails did in fact install Rails but rails was not recognized as an executable. The fix for me was to run rbenv rehash.
I found this fix and more details on setting up Rails 5 at https://gorails.com/setup/osx/10.11-el-capitan
回答8:
I had a similar issue, but with rbenv.
I originally installed ruby on bash. Then I played around with .bashrc in VIM, messed that file up, and reset it back to default. In doing so, I unknowingly removed the exported rbenv $PATH. Because of this, my terminal no longer recognized that I had ruby installed.
I revisited the ruby installation page (https://gorails.com/setup/ubuntu/15.04) and tried to set up my rbenv path again with this command:
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
It failed.
Luckily, I had already switched to zsh (with oh-my-zsh) between the time I messed up my .bashrc and the time I tried to access irb from my terminal.
My solution was to set up the rbenv path per the installation guide, but by replacing all instances of .bashrc with .zshrc like so:
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.zshrc
Hope this helps!
回答9:
Here's what I've done. And the problem is gone. Hence I guess problem solved.
rvm use system
change to the system ruby. remove all gems in it using the command provided and explained here. then I install wanted ruby versions from scratch:
rvm install 1.8.7
rvm install rails -v 3.0.7
then bundle install
for further detail, might need dig into the gem install procedure.
回答10:
add source ~/.rvm/scripts/rvm to your .bashrc file if rails installs fine but then you get the error "rails is not currently installed". This frustrated me for a while but I found the answer here: http://www.codelearn.org/blog/how-to-install-ruby-rails-screencasts-linux-mac-windows
回答11:
I just reloaded my terminal
source ~/.bashrc
See: How do I reload .bashrc without logging out and back in?
回答12:
I had the same problem but the solution above didn't help.
This was my scenario
rvm list
=> ree-1.8.7-2012.02 [ i686 ]
ruby-1.9.3-p125 [ x86_64 ]
which ruby
/Users/dev/.rvm/rubies/ree-1.8.7-2012.02/bin/ruby
which rails
/usr/bin/rails
gem list --local
..
rails (3.2.8)
rails2_asset_pipeline (0.1.20)
railties (3.2.8)
..
rvm use ruby-1.9.3-p125
which ruby
/Users/dev/.rvm/rubies/ruby-1.9.3-p125/bin/ruby
which rails
/Users/dev/.rvm/gems/ruby-1.9.3-p125/bin/rails
By uninstalling rails and railties and reinstalling rails when using ree my problem was resolved.
Hope this helps others in my situation, not sure how I got into it :S
回答13:
I had the same problem, I ended up deleting my .rvmrc rvm --create --rvmrc 1.8.7@project where the 1.8.7@project is whatever you want your ruby to be. cded in and out and it worked. http://sirupsen.com/get-started-right-with-rvm/
回答14:
Just had same problem and couldn't find an answer. Here's what I did:
find current rails path
$ which rails
returns something like this: /usr/local/rails
Delete current version:
$ sudo rm -rf /usr/local/rails
Reinstall rails
$ sudo gem install rails
回答15:
I ran into this same issue and none of the answers given helped so I thought I'd share my solution in case it might be useful for someone else.
I was messing around with my .profile and .bashrc files and along the way I messed up my RVM install. Still not sure exactly what I did, but the fix was easy. Just had to run the following command, which cleans up all of your system path settings for RVM:
rvm get [head|stable] --auto-dotfiles
Note that if you're running an old version of RVM this may upgrade your setup, which may not be what you want.
回答16:
A possible solution is to not maintain two different configuration files .bash_profile and .bashrc
The solution as suggested in this excellent post on the difference between .bash_profile and .bashrc is to source .bashrc from your .bash_profile file, then putting PATH and common settings in .bashrc.
Quoting,
add the following lines to .bash_profile:
if [ -f ~/.bashrc ]; then
source ~/.bashrc
fi
end quote
回答17:
I had this error after updating ruby. I had to run 'bundle install' to fix it.
回答18:
Try to specify gemset explicitely in your Gemfile:
source 'https://rubygems.org'
ruby "2.2.3"
#ruby-gemset=rails424
回答19:
Try This:
You need to change your terminal emulator preferences to allow login shell.
Sometimes it is required to use /bin/bash --login as the command.
$ bin/bash --login
$ rails -v
回答20:
I had this message on my Mac:
Rails is not currently installed on this system. To get the latest version, simply type:
and it was about the $PATH not being correct. The system has an outdated version of rails (/usr/bin/ruby). The path to your chosen version of ruby ($HOME/.rbenv/versions/2.3.0/bin) must precede the system's outdated version along $PATH var, like below:
export PATH="$HOME/.rbenv/versions/2.3.0/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH"
adjust it to your version of ruby.
回答21:
For MacOS (High Sierra):
Tokaido is the Rails installer system recommended on the "Getting Started" Rails guide page for Mac OS. But it doesn't just install, it runs its own shell scripts. If you start out using that, which sources its own shell environment, then later start a terminal without launching from the Tokaido shell, this happens, because the "rails" command falls back to the original system rails code on the Mac.
For mine, the 'which rails' command in a normal terminal returns
/usr/bin/rails
But after launching Tokaido's shell, 'which rails' gives this path:
/Users/charlesross/.tokaido/Gems/2.2.0/bin/rails
回答22:
Out of nowhere Rails wasn't currently installed but, what fixed it was
rvm use ruby-2.6.0
...and verified my path in .bash_profile
export PATH="$PATH:$HOME/.rvm/bin"
回答23:
I was having this problem today. I haven't 100% solved it, but in new tabs I can do rvm use 2.5.5 and then rails -v works fine.
➜ my-repo git:(next_release) ruby -v
ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-darwin18]
➜ my-repo git:(next_release) rails -v
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your "rails" command.
➜ my-repo git:(next_release) rvm use 2.5.5
Using /Users/amberwilkie/.rvm/gems/ruby-2.5.5
➜ my-repo git:(next_release) rails -v
Could not find rake-12.3.3 in any of the sources
Run `bundle install` to install missing gems.
➜ my-repo git:(next_release) bundle install
来源：https://stackoverflow.com/questions/7788946/rails-keeps-telling-me-that-its-not-currently-installed