(CommandList
  children: [
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (C {(/sbin/modprobe)} {(-q)} {(test_printf)})
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (C {(/sbin/modprobe)} {(-q)} {(-r)} {(test_printf)})
            (C {(echo)} {(DQ ("printf: ok"))})
          ]
          spids: [-1 16]
        )
      ]
      else_action: [(C {(echo)} {(DQ ("printf: [FAIL]"))}) (C {(exit)} {(1)})]
      spids: [34 48]
    )
  ]
)