RVM错误在Ubuntu上安装rubygems

Question

I have an ubuntu machine and I am trying to install rubygems using RVM by following this guide:

• https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm

When I run the command rvm rubygems current or even the command rvm rubygems latest I get the following error:

fl4m3ph03n1x: ~ $ rvm rubygems current
system - #downloading rubygems-2.4.8
system - #extracting rubygems-2.4.8.....
system - #removing old rubygems.........
$LANG was empty, setting up LANG=en_US.utf8, if it fails again try setting LANG to something sane and try again.
system - #installing rubygems-2.4.8.
Error running 'env GEM_HOME=/home/fl4m3ph03n1x/.rvm/gems/system@global GEM_PATH= /home/fl4m3ph03n1x/.rvm/rubies/system/bin/ruby -d /home/fl4m3ph03n1x/.rvm/src/rubygems-2.4.8/setup.rb --no-document',
showing last 15 lines of /home/fl4m3ph03n1x/.rvm/log/1437602750_system/rubygems.install.log
[2015-07-22 22:05:50] /home/fl4m3ph03n1x/.rvm/rubies/system/bin/ruby
current path: /home/fl4m3ph03n1x/.rvm/src/rubygems-2.4.8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/fl4m3ph03n1x/.rvm/bin
command(7): env GEM_HOME=/home/fl4m3ph03n1x/.rvm/gems/system@global GEM_PATH= /home/fl4m3ph03n1x/.rvm/rubies/system/bin/ruby -d /home/fl4m3ph03n1x/.rvm/src/rubygems-2.4.8/setup.rb --no-document
env: /home/fl4m3ph03n1x/.rvm/rubies/system/bin/ruby: No such file or directory

At first I thought the error was due to the --no-document flag, but after reading and trying this discussion on github , nothing changed.

I also checked this stackoverflow discussion but it doesn't seem to be applicable to my case because I have a fresh installation (no manually installed packages nor anything).

Over all I tried using commands like rvm get head and rvm stable but nothing seems to work.

What am I missing? Could this be a permission's problem somehow?

EDIT:

This is the result of rvm list :

rvm rubies

   ruby-2.2.1 [ x86_64 ]

# Default ruby not set. Try 'rvm alias create default <ruby>'.

# => - current
# =* - current && default
#  * - default

Answer 1

I had ruby installed, but turns out it was not set in rvm. To fix this first I tried using rvm use ruby --default , but I got the infamous "rvm is not a function" error.

To fix this, first run bash --login and then then rvm use ruby --default .

Once these steps are complete you can proceed with rubygems installation.