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Before / After Hooks

Where calling on the same task name, executed in order of inclusion

# call an existing task
before :starting, :ensure_user

after :finishing, :notify


# or define in block
before :starting, :ensure_user do
  #
end

after :finishing, :notify do
  #
end

If it makes sense for your use case (often, that means generating a file) the Rake prerequisite mechanism can be used:

desc "Create Important File"
file 'important.txt' do |t|
  sh "touch #{t.name}"
end
desc "Upload Important File"
task :upload => 'important.txt' do |t|
  on roles(:all) do
    upload!(t.prerequisites.first, '/tmp')
  end
end

The final way to call out to other tasks is to simply invoke() them:

namespace :example do
  task :one do
    on roles(:all) { info "One" }
  end
  task :two do
    invoke "example:one"
    on roles(:all) { info "Two" }
  end
end

This method is widely used.

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