(command.Case
  to_match: {(DQ ($ Id.VSub_DollarName MACH))}
  arms: [
    (case_arm
      pat_list: [{(DQ <u3b2>)} {(DQ <sparc>)} {(DQ <i386>)} {(DQ <ppc>)}]
      action: [
        (command.Simple
          words: [{<echo>} {(DQ <'# This is the per-system configuration file\n'>)}]
          redirects: [(redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<_sysconfig>})]
          more_env: []
          do_fork: T
        )
      ]
      spids: [87 103 116 -1]
    )
    (case_arm
      pat_list: [{<Id.Lit_Star '*'>}]
      action: [
        (C {<echo>} {(DQ <'Unknown architecture.'>)})
        (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
      ]
      spids: [119 121 136 -1]
    )
  ]
  redirects: []
)