问题
After using Ruby and Rails for quite some time now, I wanted to try RVM. Everything works fine, except for one thing:
In a freshly opened Terminal ruby points to the system's ruby, despite the fact, that I used the rvm --default command.
user@terra ~ $ ruby -v
ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-darwin10]
user@terra ~ $ which ruby
/opt/local/bin/ruby
user@terra ~ $ rvm list
ruby-1.8.7-p334 [ ]
=> ruby-1.9.2-p180 [ ]
Everything is fine after I call rvm reload
user@terra ~ $ rvm reload
user@terra ~ $ ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.1]
tmangner@terra ~ $ which ruby
/Users/user/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
I set up my .bash_profile as described in the documentation:
[[ -s "/Users/user/.rvm/scripts/rvm" ]] && source "/Users/user/.rvm/scripts/rvm"
That --default does not seem to work for me ...
user@terra ~ $ rvm use 1.9.2 --default
Using /Users/user/.rvm/gems/ruby-1.9.2-p180
user@terra ~ $ rvm default
user@terra ~ $
I'm using Mac OS X Snow Leopard (10.6.6)
回答1:
I had the same problem once. It turned out the rvm-script got loaded twice, which broke things a bit.
Check all the files that load when you open a shell:
/etc/profile
~/.bashrc
~/.bash_profile
and so on, and make sure they don't load RVM twice.
Maybe put
echo "Going to load RVM"
before
[[ -s "/Users/user/.rvm/scripts/rvm" ]] && source "/Users/user/.rvm/scripts/rvm"
in your ~/.bash_profile to see if it happens or not.
回答2:
Moving the initialization
[[ -s "/usr/local/rvm/scripts/rvm" ]] && . "/usr/local/rvm/scripts/rvm"
in the bottom of ~/.bash_profile solved the problem for me.
回答3:
A possible fix for ZSH users:
Somehow I had:
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
in both .zprofile and .zshrc.
Removing the line from .zprofile resolved the issue. (Though you should be able to remove from either, as long as it appears just once)
回答4:
I had the same problem.
Moving:
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function
after the line from MacPorts:
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
solved the problem for me.
回答5:
Run the command:
rvm use --default 1.9.2?
This worked for me on openSUSE, I don't know about Snow Leopard though.
回答6:
Instead of:
rvm use 1.9.2 --default
I used the full version:
rvm use ruby-1.9.2-p290 --default
That worked for me in zsh.
回答7:
I had the same problem and since I use Oh-My-Zsh it was a little bit more difficult to track if I have duplicate calls to RVM.
I fixed it by moving the call to RVM from the separate rvm.zsh file located in my \custom folder inside \oh-my-zsh to the very end of my main .zshrc file.
It looks like RVM is really sensitive to being called not at the end of your zsh initialization sequence.
回答8:
As a sanity check, make sure that the project you are working on has the same Ruby version that you try to set as default in the .ruby-version file.
It happened to me, and I couldn't figure out why rvm doesn't use my default.
回答9:
I had the same issue on Mac OS X 10.7, and later I found that my account was not added to the "rvm" group.
After I added myself to it I can set --default.
回答10:
My issue was resolved by changing
PATH=/usr/local/bin
to
PATH=$PATH:/usr/local/bin
in my .zshrc file.
Obviously, you need to make sure RVM is properly installed first, and run the type rvm | head -1 check that @choise suggested. rvm use --default 1.9.3-p362 now works properly.
See "Sometimes, CD to a dir with .rvmrc doesn't set the Ruby version or gemset" for more information.
回答11:
For some really newbies on Mac OS use JewelryBox and in preferences section you find
"show default ruby in system menu bar"
checking this allow you to switch between rubies.
You can select your pre-installed rubygems (if you have rubygems) via "system@*" choice.
回答12:
I followed the suggestions above - checked my bash_profile (which was fine) and also noticed that in ubuntu you may need to head the advice of https://rvm.io/support/faq/#shell_login
However I was still having this problem until I realised that the project I was trying to run had a .rvmrc file that was specifying a version of ruby that I didn't have installed. When I corrected this - I stopped having the problem (so in fact it wasn't that the use default wasn't working, but that this project was overriding it)
回答13:
I had to remove the [[ -s "/usr/local/rvm/scripts/rvm" ]] && . "/usr/local/rvm/scripts/rvm" line from ~/.bash_profile and had to move it to the very bottom of ~/.bashrc.
This fixed the issue on OS X 10.10.1.
回答14:
What does type rvm | head -1 print out?
In my .bash_profile on the latest MacOS X I had to put:
# Ruby Version Manager
[[ -s "/usr/local/rvm/scripts/rvm" ]] && . "/usr/local/rvm/scripts/rvm"
I also created a gemset and set this as default:
rvm reload
rvm install 1.9.2
rvm --create use 1.9.2@default
rvm --default use 1.9.2@default
回答15:
You need to put the path to RVM in front of your PATH:
$ export PATH=/path/to/rvm-dir:$PATH
回答16:
For some reason I had in my $HOME/bin directory ruby, gem, rake, ... file stubs. Therefore my rvm --default use 1.9.3 didn't work as expected. Removing the $HOME/bin directory solved the problem.
cat bin/ruby
#!/usr/bin/env bash
if [[ -s "/usr/local/rvm/environments/ruby-1.9.2-p290" ]]
then
source "/usr/local/rvm/environments/ruby-1.9.2-p290"
exec ruby "$@"
else
echo "ERROR: Missing RVM environment file: '/usr/local/rvm/environments/ruby-1.9.2-p290'" >&2
exit 1
fi
回答17:
Try this to set default Ruby for a new shell:
sudo rvm alias create default 1.9.2
来源：https://stackoverflow.com/questions/5604877/how-to-use-rvm-default-on-macosx