ruby, gems and jekyll install memo

gistfile1.txt

###check if ruby is installed?
rpm -q ruby

###install ruby
yum install ruby ruby-devel rdoc irb

###install ruby gems
wget http://rubyforge.org/frs/download.php/60718/rubygems-1.3.5.tgz

tar xzf rubygems-1.3.5.tgz 
cd  rubygems-1.3.5
ruby setup.rb

gem -v

###install jekyll
gem install jekyll

###install failed with the following message.
buffer overflow detected

###I changed memory of vmware player from 192MB to 256MB.

###install ruby again *1
cd /etc/yum.repos.d/
wget http://rubyworks.rubyforge.org/RubyWorks.repo
yum install ruby

[root@vm yum.repos.d]# ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-linux]

[root@vm yum.repos.d]# gem install jekyll
ERROR:  Error installing jekyll:
        liquid requires RubyGems version >= 1.3.7

###go to rubyforge and check the url of rubygems that you wanna get.
http://rubyforge.org/frs/?group_id=126

wget http://rubyforge.org/frs/download.php/60718/rubygems-1.3.7.tgz
cd  rubygems-1.3.7
ruby setup.rb

###install jekyll and succeeded.
gem install jekyll

[root@vm rubygems-1.3.7]# jekyll -v
Jekyll 0.11.2

[root@vm JEKYLL_HOME]# cd /var/www/html/jekyll
$ git clone http://github.com/plusjade/jekyll-bootstrap.git JEKYLL_HOME

###I tried to start up jekyll, but it failed.
[root@vm ~]# jekyll --server --auto
WARNING: Could not read configuration. Using defaults (and options).
        No such file or directory - /root/_config.yml
Auto-regenerating enabled: /root -> /root/_site

### I read the above message and realized that I have to move to the directory
### where the config file is located.
[root@vm JEKYLL_HOME]# cd /var/www/html/jekyll/JEKYLL_HOME
[root@vm JEKYLL_HOME]# jekyll --server --auto
Configuration from /var/www/html/jekyll/JEKYLL_HOME/_config.yml
Auto-regenerating enabled: /var/www/html/jekyll/JEKYLL_HOME -> /var/www/html/jekyll/JEKYLL_HOME/_site

###this is a reference
### *1
http://help.papertrailapp.com/discussions/questions/114-buffer-overflow-detected