(command.CommandList
  children: [
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DBracket
                  expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{(DQ ($ Id.VSub_Number '$2'))})
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (C {<echo>} 
              {(DQ <'Usage '> ($ Id.VSub_Number '$0') <': <chef-server-url> <chef-server-password>'>)}
            )
            (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [3 16]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:CHEFSERVER)
          op: assign_op.Equal
          rhs: {(DQ ($ Id.VSub_Number '$1'))}
          spids: [34]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:CHEFPASSWD)
          op: assign_op.Equal
          rhs: {(DQ ($ Id.VSub_Number '$2'))}
          spids: [39]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DBracket
                  expr: 
                    (bool_expr.LogicalNot
                      child: (bool_expr.Unary op_id:Id.BoolUnary_d child:{<.chef>})
                    )
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (command.Simple
              words: [{<knife>} {<configure>} {<--initial>}]
              redirects: [
                (redir.HereDoc
                  op: <Id.Redir_DLess '<<'>
                  fd: -1
                  here_begin: {<EOF>}
                  here_end_span_id: 85
                  stdin_parts: [
                    <'.chef/knife.rb\n'>
                    (${ Id.VSub_Name CHEFSERVER)
                    <'\n'>
                    <'\n'>
                    <'\n'>
                    <'/etc/chef-server/admin.pem\n'>
                    <'\n'>
                    <'/etc/chef-server/chef-validator.pem\n'>
                    <'.\n'>
                    (${ Id.VSub_Name CHEFPASSWD)
                    <'\n'>
                  ]
                )
              ]
            )
          ]
          spids: [44 57]
        )
      ]
      else_action: [(C {<echo>} {(DQ <'Knife configuration already exists!'>)})]
    )
  ]
)