I need to use Ruby 2.1.2 in Cloud9. rvm is already installed, so that was nice:
samueller@test2:~/workspace $ rvm -v
Warning! PATH is not properly set up, '/usr/local/rvm/gems/ruby-2.1.1@rails4/bin' is not at first place,
usually this is caused by shell initialization files - check them for 'PATH=...' entries,
it might also help to re-add RVM to your dotfiles: 'rvm get stable --auto-dotfiles',
to fix temporarily in this shell session run: 'rvm use ruby-2.1.1@rails4'.
rvm 1.25.28 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
Annoying warning... I get an error when I try running rvm install 2.1.2, but then I noticed this support webpage about installing "the real rvm" at https://docs.c9.io/writing_a_ruby_app.html:
curl -L https://get.rvm.io | bash -s stable
Unfortunately though I get an error with that too and then still can't install the latest Ruby:
samueller@test:~/workspace $ curl -L https://get.rvm.io | bash -s stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 184 100 184 0 0 381 0 --:--:-- --:--:-- --:--:-- 382
100 20819 100 20819 0 0 35708 0 --:--:-- --:--:-- --:--:-- 35708
Downloading https://github.com/wayneeseguin/rvm/archive/stable.tar.gz
Upgrading the RVM installation in /usr/local/rvm/
Can not update 'scripts/zsh/Completion/_rvm', it's a conflict between Zsh and multiuser installation, prefix the command with 'rvmsudo' to update this file.
Can not update 'scripts/extras/completion.zsh/_rvm', it's a conflict between Zsh and multiuser installation, prefix the command with 'rvmsudo' to update this file.
Found 48293 files not belonging to 'rvm',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Found 7731 directories with mode different then '775',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Found 7074 files with mode different then '664' or '775',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Upgrade of RVM in /usr/local/rvm/ is complete.
# Scott Mueller,
#
# Thank you for using RVM!
# We sincerely hope that RVM helps to make your life easier and more enjoyable!!!
#
# ~Wayne, Michal & team.
In case of problems: http://rvm.io/help and https://twitter.com/rvm_io
Upgrade Notes:
* No new notes to display.
samueller@test:~/workspace $ curl -L https://get.rvm.io | bash -s stable --ruby
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 184 100 184 0 0 417 0 --:--:-- --:--:-- --:--:-- 417
100 20819 100 20819 0 0 37239 0 --:--:-- --:--:-- --:--:-- 37239
Downloading https://github.com/wayneeseguin/rvm/archive/stable.tar.gz
Upgrading the RVM installation in /usr/local/rvm/
Can not update 'scripts/zsh/Completion/_rvm', it's a conflict between Zsh and multiuser installation, prefix the command with 'rvmsudo' to update this file.
Can not update 'scripts/extras/completion.zsh/_rvm', it's a conflict between Zsh and multiuser installation, prefix the command with 'rvmsudo' to update this file.
Found 48293 files not belonging to 'rvm',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Found 7731 directories with mode different then '775',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Found 7074 files with mode different then '664' or '775',
use `--debug` to see the list, run `rvmsudo rvm get stable` to fix it., prefix the command with 'rvmsudo' to fix it, if the situation persist report a bug.
Upgrade of RVM in /usr/local/rvm/ is complete.
# Scott Mueller,
#
# Thank you for using RVM!
# We sincerely hope that RVM helps to make your life easier and more enjoyable!!!
#
# ~Wayne, Michal & team.
In case of problems: http://rvm.io/help and https://twitter.com/rvm_io
Upgrade Notes:
* No new notes to display.
rvm 1.25.31 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]
Warning! PATH is not properly set up, '/usr/local/rvm/gems/ruby-2.1.1@rails4/bin' is not at first place,
usually this is caused by shell initialization files - check them for 'PATH=...' entries,
it might also help to re-add RVM to your dotfiles: 'rvm get stable --auto-dotfiles',
to fix temporarily in this shell session run: 'rvm use ruby-2.1.1@rails4'.
Searching for binary rubies, this might take some time.
No binary rubies available for: ubuntu/14.04/x86_64/ruby-2.1.3.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 50 0 50 0 0 2 0 --:--:-- 0:00:18 --:--:-- 11
/usr/local/rvm/scripts/functions/utility: line 416: 1.4G: syntax error: invalid arithmetic operator (error token is ".4G")
Can I install Ruby 2.1.2 or 2.1.3 with Cloud9? Does rvm work properly with Cloud9?
There is little than cannot be done in C9. The answer is basically listed in the error you posted. Try:
$ rvmsudo rvm get head
It takes some time to upgrade, but patience will be rewarded: installing those Ruby versions should then work like a charm.