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                    (assign_pair
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              spids: [829 840]
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                  terminator: (Token id:Id.Op_Semi val:';' span_id:856)
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              ]
              action: [
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name name:awk)
                      op: assign_op.Equal
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                )
              ]
              spids: [847 858]
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    (command.AndOr
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            (DQ ('ERROR: accessing tracing. Root user? Kernel has FTRACE?\n') 
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          {
            (DQ ('ERROR: ftrace may be in use by PID ') 
              (command_sub
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                  (command.CommandList
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              arg_word: {($ Id.VSub_DollarName '$flock')}
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        (C {(die)} {(DQ ('ERROR: unable to write ') ($ Id.VSub_DollarName '$flock') (.))})
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    (command.ShAssignment
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          op: assign_op.Equal
          rhs: {(1)}
          spids: [940]
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    (C {(sysctl)} {(-q)} {(kernel.ftrace_enabled) (Id.Lit_Equals '=') (1)})
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      redirects: [
        (redir.Redir
          op: (Token id:Id.Redir_Less val:'<' span_id:962)
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    (command.AndOr
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        (C {(edie)} 
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                      redirects: [
                        (redir.Redir
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                          arg_word: {(tracing_thresh)}
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                  ]
                  negated: T
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:1001)
            )
          ]
          action: [
            (C {(edie)} 
              {
                (DQ ('ERROR: setting tracing_thresh to ') ($ Id.VSub_DollarName '$thresh') 
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          spids: [990 1003]
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              terminator: (Token id:Id.Op_Semi val:';' span_id:1024)
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          ]
          action: [
            (command.Simple
              words: [{(echo)} {(SQ )}]
              redirects: [
                (redir.Redir
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            )
            (command.ForEach
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              iter_words: [{(/proc/) ($ Id.VSub_DollarName '$pid') (/task/) (Id.Lit_Star '*')}]
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                          cond: [
                            (command.Sentence
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                                      words: [
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                                          (braced_var_sub
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                                      redirects: [
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                                  negated: T
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                          ]
                          action: [
                            (C {(edie)} 
                              {
                                (DQ ('ERROR: setting -p ') ($ Id.VSub_DollarName '$pid') 
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                          spids: [1058 1076]
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              terminator: (Token id:Id.Op_Semi val:';' span_id:1103)
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          action: [
            (command.If
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                              redirects: [
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                                  fd: -1
                                  arg_word: {(set_ftrace_pid)}
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                          negated: T
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                  action: [
                    (C {(edie)} 
                      {
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                  spids: [1108 1121]
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          action: [
            (C {(edie)} 
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          action: [
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                          negated: T
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          action: [
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                          negated: T
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                  action: [(C {(edie)} {(DQ ('ERROR: setting -t (funcgraph-abstime). Exiting.'))})]
                  spids: [1281 1294]
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          ]
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          ]
          action: [
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                (if_arm
                  cond: [
                    (command.Sentence
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                              words: [{(echo)} {(funcgraph-proc)}]
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                          negated: T
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          spids: [1308 1318]
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          op: assign_op.Equal
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          spids: [1352]
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          cond: [
            (command.Sentence
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                (command.DParen
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          action: [
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                      (SQ 
                        (Token
                          id: Id.Lit_Chars
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                          span_id: 1391
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                  spids: [1388]
                )
              ]
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          spids: [1355 1365]
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                  action: [(C {($ Id.VSub_DollarName '$cat')} {(trace)})]
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)