release tool - capistrano

Capistrano 是一个基于Rails开发部署工具。原本是主要为Rails应用使用。现在已经比较通用，不光在Rails应用中可以用。

cd app_dir
capify .

vi config/deploy.rb
set :application, "demo"
set :deploy_to, "/path/to/your/app/dir"
set :scm, :subversion
set :user, "user_for_deploy"

# cap deploy  #  This calls both `update' and `restart'
# cap deploy:update  # This calls both `update_code' or `symlink'
# cap deploy:update_code # get source from repository, and call finalize_update
# cap finalize_update # This create 3 symbol links [ public, tmp, log ]
# cap deploy:restart # This works by calling the script/process/reaper

# 如果不是Rails应用，需要覆盖下面2个方法

namespace :deploy do
  task :finalize_udpate do

  end

  task :restart do
  end
end