Problems encountered with MAC laptop during the installation of the environment for SOA class. The programming language is Ruby. So we have to install Ruby via RVM. But first Xcode command line tools and Homebrew (as missing package manager for OSX)

Setting Environnment for Service Oriented Architecture Course on MAC laptop

Step 1: Installing Xcode command line tools

I already had Xcode IDE installed. I launch Xcode and went to Xcode->Open Developper Tools->More Developpers Tools that led me to a website where i downloaded Xcode command line tools and installed it. And I tried the suggestion on ISS-SOA Github tutorial, the command 'xcode-select --install' which stopped with an error: Can't install the Software because it is not currently available from the Software Update server.Lucky then.


Step 2: Installing Homebrew

ruby -e "$(curl -fsSL XXXX)"
XXXX as an url that was the one on the Homebrew website.

brew doctor showed some errors like:
      Warning: Unbrewed .xxxx files were found in folder XXXX.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.
Unexpected .xxxx files:
    XXXX/[something].xxx
    
      Solution:Delete the file XXXX/[something].xxx

      Warning: /usr/bin occurs before /usr/local/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:
    curl
    curl-config
Consider setting your PATH so that /usr/local/bin
occurs before /usr/bin. Here is a one-liner:
    echo export PATH='/usr/local/bin:$PATH' >> ~/.bash_profile
    
    Solution: run -> echo export PATH='/usr/local/bin:$PATH' >> ~/.bash_profile
              quit and relaunch the terminal
              (.bash_profile or .profile or bashrc)


Step 3: Installing some development packages and then RVM

brew install rvm
Error: No available formula for rvm 
Searching taps...

I run -> brew tap homebrew/version -> brew install rvm
But same problem
Tried to install without brew, by using curl
  curl -L https://get.rvm.io | bash -s stable --autolibs=enable
I get: 
  Library not loaded: /usr/local/lib/libcurl.4.dylib
  Referenced from: /usr/local/bin/curl
  Reason: Incompatible library version: curl requires version 8.0.0 or later, but libcurl.4.dylib provides version 7.0.0


Step 4: Restart the installations

I decide to restart the process by deleting everything: rm -rf /usr/local
And then:
install command_line_tools_for_os_x_10.9_for_xcode_6.1_beta.dmg
run -> ruby -e "$(curl -fsSL XXXX)"  from Homebrew site
run -> brew install autoconf automake libtool pkg-config apple-gcc42 libyaml readline libxml2 libxslt libksba openssl sqlite
Error:No available formula for apple-gcc42 
      Searching taps...
      homebrew/dupes/apple-gcc42
run -> brew tap homebrew/dupes
run -> brew install autoconf automake libtool pkg-config apple-gcc42 libyaml readline libxml2 libxslt libksba openssl sqlite
run -> curl -L get.rvm.io | bash (installing rvm with curl)
run -> rvm -v
Error:-bash: rvm: command not found
run -> source ~/.rvm/scripts/rvm (in order to use rvm in your current shell)
run -> rvm get head  (install stable version ?)
run -> rvm install 2.0.0  (install ruby 2.0.0)
run -> rvm use 2.0.0 (use ruby 2.0.0 as current version)
run -> rvm default 2.0.0 (version 2.0.0 as default version)
run -> ruby -v (check ruby)

Xcode command line tools, Homebrew, RVM and RUBY: All installed.

Good additionnal resource
http://www.interworks.com/blogs/ckaukis/2013/03/05/installing-ruby-200-rvm-and-homebrew-mac-os-x-108-mountain-lion