1. install Xcode(from App Store)
2. install GCC-10.7-v2.pkg
3. install rvm.
user$ bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)
4. config bash_profile
$ echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function'>>~/.bash_profile
5. install ruby 1.9.3
rvm install 1.9.3
6. install rails 3.1.3
rvm use 1.9.3
gem install rails -v 3.1.3 --no-ri --no-rdoc
2. install GCC-10.7-v2.pkg
3. install rvm.
user$ bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)
4. config bash_profile
$ echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function'>>~/.bash_profile
5. install ruby 1.9.3
rvm install 1.9.3
6. install rails 3.1.3
rvm use 1.9.3
gem install rails -v 3.1.3 --no-ri --no-rdoc
本文详细介绍了如何在MacOS系统上安装Xcode、GCC、RVM,并通过RVM安装特定版本的Ruby (1.9.3) 和 Rails (3.1.3),适合初学者快速入门。

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