ruby的升级过程

 CentOS 5.5下的ruby版本有些旧，今天需要做一些测试，需要升级ruby, 以下是升级过程:

CentOS release 5.5 (Final)

系统自带的ruby版本:

# ruby -v
 ruby 1.8.5 (2006-08-25) [x86_64-linux]
# which ruby
 /usr/bin/ruby

先安装 RVM 从github repository.

# $ bash < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)

使用rvm工具来安装最新版的ruby 1.9.3

# rvm install 1.9.3
   Extracting rubygems-1.8.10 ...
   Removing old Rubygems files...
   Installing rubygems-1.8.10 for ruby-1.9.3-p0 ...
   Installation of rubygems completed successfully.
   ruby-1.9.3-p0 - adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
   ruby-1.9.3-p0 - #importing default gemsets (/usr/local/rvm/gemsets/)
   Install of ruby-1.9.3-p0 - #complete

添加至系统变量.

# vim /etc/profile
# 添加如下行.
  [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
# source /etc/profile

输入type rvm, 如输出下面信息则表示安装正确.

# type rvm | head -1
   rvm is a function

新版本ruby的路径.

# /usr/local/rvm/bin/ruby-1.9.3-p0 -v
   ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

使用最新安装的版本替换系统自带的旧版本的ruby.

# rvm use 1.9.3
   Using /usr/local/rvm/gems/ruby-1.9.3-p0

# rvm use 1.9.3 --default
   Using /usr/local/rvm/gems/ruby-1.9.3-p0

已经被替换了.

# which ruby
   /usr/local/rvm/rubies/ruby-1.9.3-p0/bin/ruby

再直接执行ruby命令查看版本号.

# ruby -v
   ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

升级完成了.

参考学习站点: 

http://beginrescueend.com/rvm/basics/