When you want to clone a octopress blog from the github to a machine and then enabled to publish posts from the cloned repo, you can follow the following steps:

•   git clone -b source https://github.com/isunix/isunix.github.com octopress
•   cd octopress
•   git clone https://github.com/isunix/isunix.github.com _deploy
•   sudo gem install bundler
•   bundle install
•   bundle exec rake “new_post[“The Title of Your Article”]”
•   bundle exec rake generate
•   bundle exec rake preview
•   bundle exec rake deploy
•   git add .
•   git commit -m ‘your comment’
•   git push origin source