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Multiple versions of ruby without RVM

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http://askubuntu.com – I have been trying to understand RVM and decided to do so by not using it and seeing the consequences. I am trying to see how I can manage different versions of ruby and their gemsets without RVM. I compiled Ruby 1.9.1 from source on my Ubuntu machine and found it in the path usr/local/bin/ruby. On saying ruby -v, I got the recently installed version. I did the same with Ruby 1.8.7 and upon doing a whereis ruby, got the following output : usr/local/bin/ruby usr/local/lib/ruby When I say which ruby, I get the usr/local/bin/ruby path. The contents of usr/local/bin/ruby were the same as be (HowTos)

Songlist's picture
Submitted by Songlist on 02/04/2013

Stories similar to Multiple versions of ruby without RVM

So I was making a cgi ruby script and had the following at the top of the script file:

#!/usr/bin/env ruby require 'rubygems' require 'action_pack' require 'cgi'

After a couple of hours of not getting "/usr/bin/env: ruby: No such file or directory" error and google searching, I uninstalled my system ruby 1.8.7 (I also had 1.9.3 installed via rvm) by doing sudo apt-get purge ruby rubygems.

Ubuntu ruby on rails 1 year 4 weeks ago

Hi,

I am a php developer and I decided to learn ruby on rails.

I have a few question.

I have an ubuntu virtual machine with lamp. It mean that it has alrweady php and when I access the ip of the machine from my browser it does load the index.php.

if I install ruby on rails will theere be collision between the php and ruby or the server just know that if I ask for ruby file or for php.

which -a ruby gives me

/usr/ruby /usr/ruby /usr/ruby

It gives the same path three times. Why does this happen?

About 50% of the time, when I run bundle (or bundle exec foo) I get an error like the following:

> bundle /usr/local/Cellar/ruby/1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': No such file or directory - /usr/local/lib/?y (Errno::ENOENT) from /usr/local/Cellar/ruby/1.9.3-p374/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' from /usr/

I hope my title isn't confusing. I've got a CentOS 5 machine and I had Ruby 1.8.7 installed on here. So in order to upgrade my Ruby installation and gems/rails I

Uninstalled Ruby: sudo yum remove ruby Downloaded the latest stable release of ruby and untared it: wget...

What is ruby? 2 years 38 weeks ago

Lately there have been a lot of one-liners posted in "ruby" on the apparent assumption that mainstream unix or Linux come with "ruby. They don't. What is "ruby"? What platforms and Operating System versions are supported? The syntax for "ruby" seems remarkably obscure compared with say "awk" or "perl". Is it related to APL?

In an executable file, you specify the environment using a shebang:

#!/usr/bin/env ruby

# ruby code here

But what if you want to specify multiple possible environments?

Ruby: High CPU usage 46 weeks 3 days ago

Im getting that alert (Linode server) every couple of day.

Top shows 110% usage by ruby.

In not doing any script with ruby, but i do use Redmine and SASS on this server, how do i debug this? how i know what is calling ruby?

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 29368 root 20 0 48440 9648 1616 S 110 1.9 598:18.25 ruby

I'll let the shell log explain itself:

root:~# rvm current system root:~# which ruby /usr/bin/ruby root:~# rvm use 1.9.2 Using /root/.rvm/gems/ruby-1.9.2-p290 root:~# rvm current ruby-1.9.2-p290 root:~# which ruby /root/.rvm/rubies/ruby-1.9.2-p290/bin/ruby root:~# rvm system root:~# rvm current system root:~# which ruby /root/.rvm/rubies/ruby-1.9.2-p290/bin/ruby root:~#

At this point, if rvm cl