How do I run a rake task from Capistrano

run("cd #{deploy_to}/current && /usr/bin/env rake `<task_name>` RAILS_ENV=production")`

namespace :rake do
  desc "Run a task on a remote server."
  # run like: cap staging rake:invoke task=a_certain_task
  task :invoke do
    run("cd #{deploy_to}/current; /usr/bin/env rake #{ENV['task']} RAILS_ENV=#{rails_env}")
  end
end

cap staging rake:invoke task=rebuild_table_abc

def run_rake(task, options={}, &block)
  command = "cd #{latest_release} && /usr/bin/env bundle exec rake #{task}"
  run(command, options, &block)
end

def rake(cmd, options={}, &block)
  command = "cd #{current_release} && /usr/bin/env bundle exec rake #{cmd} RAILS_ENV=#{rails_env}"
  run(command, options, &block)
end

rake 'app:compile:jammit'

run("cd #{release_path}/current && /usr/bin/rake <rake_task_name>", :env => {'RAILS_ENV' => rails_env})

Rake::Task["task:name"].invoke