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      more_env: []
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              (command.Simple
                blame_tok: <dirname>
                more_env: []
                words: [{<dirname>} {($ Id.VSub_Number 0)}]
                redirects: []
                do_fork: T
              )
            right: <Id.Backtick_Right '`'>
          ) <'/conf.sh'>
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      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
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      more_env: []
      words: [{<echo>} {(SQ <1..1>)}]
      redirects: []
      do_fork: T
    )
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          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'tsize='> name:tsize)
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              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'src='> name:src)
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                  (CommandSub
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                    child: 
                      (command.Simple
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                        more_env: []
                        words: [{<mktemp>} {($ Id.VSub_DollarName base) <.XXXXXX>}]
                        redirects: []
                        do_fork: T
                      )
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          ]
          redirects: []
        )
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                    child: 
                      (command.Simple
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                        more_env: []
                        words: [{<mktemp>} {($ Id.VSub_DollarName base) <.XXXXXX>}]
                        redirects: []
                        do_fork: T
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            )
          ]
          redirects: []
        )
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                {
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                    child: 
                      (command.Simple
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                        more_env: []
                        words: [{<attach_md>} {<-t>} {<malloc>} {<-s>} {<1M>}]
                        redirects: []
                        do_fork: T
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          redirects: []
        )
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                {
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                    child: 
                      (command.Simple
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                        more_env: []
                        words: [{<attach_md>} {<-t>} {<malloc>} {<-s>} {<2M>}]
                        redirects: []
                        do_fork: T
                      )
                    right: <Id.Eof_RParen _>
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            )
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          redirects: []
        )
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          pairs: [
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              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'us2='> name:us2)
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              rhs: 
                {
                  (CommandSub
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                    child: 
                      (command.Simple
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                        more_env: []
                        words: [{<attach_md>} {<-t>} {<malloc>} {<-s>} {<3M>}]
                        redirects: []
                        do_fork: T
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                    right: <Id.Eof_RParen _>
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            )
          ]
          redirects: []
        )
        (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
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      ops: [<Id.Op_DPipe _>]
    )
    (command.Simple
      blame_tok: <dd>
      more_env: []
      words: [
        {<dd>}
        {<Id.Lit_VarLike 'if='> <'/dev/random'>}
        {<Id.Lit_VarLike 'of='> (${ Id.VSub_Name src)}
        {<Id.Lit_VarLike 'bs='> <1m>}
        {<Id.Lit_VarLike 'count='> ($ Id.VSub_DollarName tsize)}
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        (Redir op:<Id.Redir_GreatAnd '2>&'> loc:(redir_loc.Fd fd:2) arg:{<1>})
      ]
      do_fork: T
    )
    (command.AndOr
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        (command.Simple
          blame_tok: <gconcat>
          more_env: []
          words: [
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            {<create>}
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            {<'/dev/'> ($ Id.VSub_DollarName us0)}
            {<'/dev/'> ($ Id.VSub_DollarName us1)}
            {<'/dev/'> ($ Id.VSub_DollarName us2)}
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          redirects: []
          do_fork: T
        )
        (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
      ]
      ops: [<Id.Op_DPipe _>]
    )
    (command.Simple blame_tok:<devwait> more_env:[] words:[{<devwait>}] redirects:[] do_fork:T)
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      more_env: []
      words: [
        {<dd>}
        {<Id.Lit_VarLike 'if='> (${ Id.VSub_Name src)}
        {<Id.Lit_VarLike 'of='> <'/dev/concat/'> (${ Id.VSub_Name name)}
        {<Id.Lit_VarLike 'bs='> <1m>}
        {<Id.Lit_VarLike 'count='> ($ Id.VSub_DollarName tsize)}
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      redirects: [
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        (Redir op:<Id.Redir_GreatAnd '2>&'> loc:(redir_loc.Fd fd:2) arg:{<1>})
      ]
      do_fork: T
    )
    (command.Simple
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      more_env: []
      words: [
        {<dd>}
        {<Id.Lit_VarLike 'if='> <'/dev/concat/'> (${ Id.VSub_Name name)}
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        {<Id.Lit_VarLike 'bs='> <1m>}
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        (Redir op:<Id.Redir_GreatAnd '2>&'> loc:(redir_loc.Fd fd:2) arg:{<1>})
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      do_fork: T
    )
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      arms: [
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                      more_env: []
                      words: [
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                          (CommandSub
                            left_token: <Id.Left_Backtick '`'>
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                              (command.Simple
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                                more_env: []
                                words: [{<md5>} {<-q>} {(${ Id.VSub_Name src)}]
                                redirects: []
                                do_fork: T
                              )
                            right: <Id.Backtick_Right '`'>
                          )
                        }
                        {<Id.KW_Bang '!'> <Id.Lit_Equals '='>}
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                          (CommandSub
                            left_token: <Id.Left_Backtick '`'>
                            child: 
                              (command.Simple
                                blame_tok: <md5>
                                more_env: []
                                words: [{<md5>} {<-q>} {(${ Id.VSub_Name dst)}]
                                redirects: []
                                do_fork: T
                              )
                            right: <Id.Backtick_Right '`'>
                          )
                        }
                        {<Id.Lit_RBracket ']'>}
                      ]
                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
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              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {(DQ <'not ok - md5 checksum comparison'>)}]
              redirects: []
              do_fork: T
            )
          ]
          spids: [218 252]
        )
      ]
      else_kw: <Id.KW_Else else>
      else_action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [{<echo>} {(DQ <'ok - md5 checksum comparison'>)}]
          redirects: []
          do_fork: T
        )
      ]
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.Simple
      blame_tok: <rm>
      more_env: []
      words: [{<rm>} {<-f>} {(${ Id.VSub_Name src)} {(${ Id.VSub_Name dst)}]
      redirects: []
      do_fork: T
    )
  ]
)