(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('infile', {[DQ [VarSub 1]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('outfile', {[DQ [VarSub 2]]})])
  (Com {[LIT_CHARS shift]} {[LIT_CHARS 2]})
  (Com {[LIT_CHARS sed]} {[DQ [VarSub @]]} {[DQ [VarSub infile]]}
    <
    (FilenameRedirectNode filename={[DQ [VarSub outfile]]} <REDIR_GREAT ">"> 1),
    >
  )
)