• As for some files to use: AANT1 files from /pnfs/uct3/users/boveia/wjets/samples/group10.phys-sm.mc09_7TeV.106020.PythiaWenu_1Lepton.merge.AOD.e468_s624_s633_r1085_r1113.WZphys.100401.02.D3PD.

• Setup ROOT environment

  export ROOTSYS=/home/rwg/joe/root
  export LD_LIBRARY_PATH=$ROOTSYS/lib:$LD_LIBRARY_PATH
  export PATH=$ROOTSYS/bin:$PATH

• Trigger cut code:

  {std::string argStr;
  
  std::cin >> argStr;
  
  // split by ','
  std::vector fileList;
  for (size_t i=0,n; i <= argStr.length(); i=n+1)
  {
    n = argStr.find_first_of(',',i);
    if (n == string::npos)
      n = argStr.length();
    string tmp = argStr.substr(i,n-i);
    fileList.push_back(tmp);
  }
  
  TChain ch("physics");
  for (int iFile=0; iFileWrite();
  
  f.Close();
  
  std::cout << "Successful completion." << std::endl;
  }
  

• Invoke:

  time echo /ecache/rwg/group10.phys-sm.mc09_7TeV.106020.PythiaWenu_1Lepton.merge.AOD.e468_s624_s633_r1085_r1113.WZphys.100401.02.D3PD.AANT1._00017.root  | root TriggerCut.C

References

• https://twiki.cern.ch/twiki/bin/view/Atlas/RootBasicTutorial