(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:basedir)
          op: assign_op.Equal
          rhs: 
            {
              (command_sub
                left_token: <Id.Left_Backtick '`'>
                command_list: 
                  (command.CommandList
                    children: [(C {<dirname>} {($ Id.VSub_Number '$0')})]
                  )
              )
            }
          spids: [24]
        )
      ]
    )
    (C {<source>} {(${ Id.VSub_Name basedir) </functions.sh>})
    (C {<root_check_run_with_sudo>} {(DQ ($ Id.VSub_At '$@'))})
    (C {<source>} {(${ Id.VSub_Name basedir) </parameters.sh>})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:DELAY)
          op: assign_op.Equal
          rhs: {(DQ <0>)}
          spids: [63]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:COUNT)
          op: assign_op.Equal
          rhs: {(DQ <100000>)}
          spids: [71]
        )
      ]
    )
    (command.AndOr
      ops: [Id.Op_DAmp]
      children: [
        (C {<Id.Lit_LBracket '['>} {<-z>} {(DQ ($ Id.VSub_DollarName '$CLONE_SKB'))} 
          {<Id.Lit_RBracket ']'>}
        )
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:CLONE_SKB)
              op: assign_op.Equal
              rhs: {(DQ <0>)}
              spids: [91]
            )
          ]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:UDP_MIN)
          op: assign_op.Equal
          rhs: {<9>}
          spids: [100]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:UDP_MAX)
          op: assign_op.Equal
          rhs: {<109>}
          spids: [103]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (C {<Id.Lit_LBracket '['>} {<-z>} {(DQ ($ Id.VSub_DollarName '$DEST_IP'))} 
                  {<Id.Lit_RBracket ']'>}
                )
              terminator: <Id.Op_Semi _>
            )
          ]
          action: [
            (command.AndOr
              ops: [Id.Op_DAmp Id.Op_DPipe]
              children: [
                (C {<Id.Lit_LBracket '['>} {<-z>} {(DQ ($ Id.VSub_DollarName '$IP6'))} 
                  {<Id.Lit_RBracket ']'>}
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:DEST_IP)
                      op: assign_op.Equal
                      rhs: {(DQ <198.18.0.42>)}
                      spids: [138]
                    )
                  ]
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:DEST_IP)
                      op: assign_op.Equal
                      rhs: {(DQ <'FD00::1'>)}
                      spids: [145]
                    )
                  ]
                )
              ]
            )
          ]
          spids: [110 123]
        )
      ]
    )
    (command.AndOr
      ops: [Id.Op_DAmp]
      children: [
        (C {<Id.Lit_LBracket '['>} {<-z>} {(DQ ($ Id.VSub_DollarName '$DST_MAC'))} 
          {<Id.Lit_RBracket ']'>}
        )
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:DST_MAC)
              op: assign_op.Equal
              rhs: {(DQ <'90:e2:ba:ff:ff:ff'>)}
              spids: [164]
            )
          ]
        )
      ]
    )
    (C {<pg_ctrl>} {(DQ <reset>)})
    (command.ForExpr
      init: 
        (arith_expr.BinaryAssign
          op_id: Id.Arith_Equal
          left: (sh_lhs_expr.Name name:thread)
          right: (arith_expr.ArithWord w:{<Id.Lit_Digits 0>})
        )
      cond: 
        (arith_expr.Binary
          op_id: Id.Arith_Less
          left: (arith_expr.VarRef token:<Id.Lit_ArithVarLike thread>)
          right: (arith_expr.ArithWord w:{($ Id.VSub_DollarName '$THREADS')})
        )
      update: (arith_expr.UnaryAssign op_id:Id.Node_PostDPlus child:(sh_lhs_expr.Name name:thread))
      body: 
        (command.DoGroup
          children: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:dev)
                  op: assign_op.Equal
                  rhs: {(${ Id.VSub_Name DEV) <Id.Lit_Other '@'> (${ Id.VSub_Name thread)}
                  spids: [217]
                )
              ]
            )
            (C {<pg_thread>} {($ Id.VSub_DollarName '$thread')} {(DQ <rem_device_all>)})
            (C {<pg_thread>} {($ Id.VSub_DollarName '$thread')} {(DQ <add_device>)} 
              {($ Id.VSub_DollarName '$dev')}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} {(DQ <'flag QUEUE_MAP_CPU'>)})
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'count '> ($ Id.VSub_DollarName '$COUNT'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'clone_skb '> ($ Id.VSub_DollarName '$CLONE_SKB'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'pkt_size '> ($ Id.VSub_DollarName '$PKT_SIZE'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'delay '> ($ Id.VSub_DollarName '$DELAY'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} {(DQ <'flag NO_TIMESTAMP'>)})
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'dst_mac '> ($ Id.VSub_DollarName '$DST_MAC'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <dst> ($ Id.VSub_DollarName '$IP6') <' '> ($ Id.VSub_DollarName '$DEST_IP'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} {(DQ <'flag UDPSRC_RND'>)})
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'udp_src_min '> ($ Id.VSub_DollarName '$UDP_MIN'))}
            )
            (C {<pg_set>} {($ Id.VSub_DollarName '$dev')} 
              {(DQ <'udp_src_max '> ($ Id.VSub_DollarName '$UDP_MAX'))}
            )
          ]
        )
    )
    (command.Simple
      words: [{<echo>} {(DQ <'Running... ctrl^C to stop'>)}]
      redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})]
    )
    (C {<pg_ctrl>} {(DQ <start>)})
    (command.Simple
      words: [{<echo>} {(DQ <Done>)}]
      redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})]
    )
    (command.ForExpr
      init: 
        (arith_expr.BinaryAssign
          op_id: Id.Arith_Equal
          left: (sh_lhs_expr.Name name:thread)
          right: (arith_expr.ArithWord w:{<Id.Lit_Digits 0>})
        )
      cond: 
        (arith_expr.Binary
          op_id: Id.Arith_Less
          left: (arith_expr.VarRef token:<Id.Lit_ArithVarLike thread>)
          right: (arith_expr.ArithWord w:{($ Id.VSub_DollarName '$THREADS')})
        )
      update: (arith_expr.UnaryAssign op_id:Id.Node_PostDPlus child:(sh_lhs_expr.Name name:thread))
      body: 
        (command.DoGroup
          children: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:dev)
                  op: assign_op.Equal
                  rhs: {(${ Id.VSub_Name DEV) <Id.Lit_Other '@'> (${ Id.VSub_Name thread)}
                  spids: [449]
                )
              ]
            )
            (C {<echo>} {(DQ <'Device: '> ($ Id.VSub_DollarName '$dev'))})
            (command.Pipeline
              children: [
                (C {<cat>} {</proc/net/pktgen/> ($ Id.VSub_DollarName '$dev')})
                (C {<grep>} {<-A2>} {(DQ <'Result:'>)})
              ]
              negated: F
            )
          ]
        )
    )
  ]
)