Capistrano Executing a command as root without using sudo To avoid the error standard in must be a tty. Thank you Simone Carletti. http://www.simonecarletti.com/blog/2010/07/capistrano-executing-a-command-as-root-without-using-sudo/

gistfile1.rb

#
# copy from
#  http://www.simonecarletti.com/blog/2010/07/capistrano-executing-a-command-as-root-without-using-sudo/
#
def surun(command)
  # To avoid the error 'standard in must be a tty'
  default_run_options[:pty] = true
  password = fetch(:root_password, Capistrano::CLI.password_prompt("root password: "))
  run("su - -c '#{command}'") do |channel, stream, output|
      channel.send_data("#{password}\n")
#
# please comment three lines if you don't need output result.
#    
#     if stream == :out
#      puts output
#     end
  end
end