(command.CommandList
  children: [
    (command.Simple
      blame_tok: <export>
      more_env: []
      words: [
        {<export>}
        {<Id.Lit_VarLike 'LD_PRELOAD='> 
          (CommandSub
            left_token: <Id.Left_DollarParen '$('>
            child: 
              (command.Simple
                blame_tok: <dirname>
                more_env: []
                words: [{<dirname>} {(DQ ($ Id.VSub_Number 0))}]
                redirects: []
                do_fork: T
              )
            right: <Id.Eof_RParen _>
          ) <'/../src/trap-syscalls.so'>
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <export>
      more_env: []
      words: [{<export>} {<Id.Lit_VarLike 'TRAP_SYSCALLS_DEBUG='> <1>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <export>
      more_env: []
      words: [{<export>} {<Id.Lit_VarLike 'TRAP_SYSCALLS_FOOTPRINT_FD='> <7>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <exec>
      more_env: []
      words: [{<exec>} {(DQ ($ Id.VSub_At '@'))}]
      redirects: []
      do_fork: T
    )
  ]
)