(command.CommandList
  children: [
    (command.If
      arms: [
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (C {<Id.Lit_LBracket '['>} {($ Id.VSub_Pound '#')} {<-ne>} {<1>} 
                      {<Id.Lit_RBracket ']'>}
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.Simple
              words: [
                {<echo>}
                {
                  (DQ <'Usage: '> 
                    (command_sub
                      left_token: <Id.Left_Backtick '`'>
                      child: (C {<basename>} {($ Id.VSub_Number 0)})
                      right: <Id.Backtick_Right '`'>
                    ) <' path'>
                  )
                }
              ]
              redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              more_env: []
              do_fork: T
            )
            (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [12 25]
        )
      ]
      else_action: []
      redirects: []
    )
    (command.Pipeline
      children: [
        (C {<stat>} {($ Id.VSub_Number 1)})
        (C {<sed>} {<-n>} {(SQ <'s/^Access: (\\([0-9]\\{1,\\}\\).*/\\1/p'>)})
      ]
      negated: F
      stderr_indices: []
    )
  ]
)