=== Magic lines to put in .bashrc ===
Once you log in to atlas01/02, open [[.bashrc]] file in your home directory and add following lines :

''export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase ''

''alias setupATLAS='source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh'''\\

Now you must switch to a "bash" shell by typing ''bash'' where the two lines above will be applied automatically. At this point to setup the ATLAS software you must type ''setupATLAS''.
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==== Atlas software and RootCore ====
To really set up the software following steps are required once you open a bash shell (see above):

  - Create a directory where you put all of your codes and files for the analysis. Let’s name it "AtlasAnalysis"
  - Create another folder where you want to do an specific analysis. Let’s name it "analysis_1"
  - Now set up the Atlas software by commanding setupAtlas
  - Go to "analysis_1" directory and setup the analysis area for RootCore analysis by commanding ''rcSetup 
Base,2.3.38''
  - Now you can try to create a new package for ATLAS analysis like this: ''rc make_skeleton UserPackage''    
    where __userPackage__ is a package name which you can be anything like JohnsPackage.

Now you can see four files and folder in analysis_1 directory namely: 
  * UserPackage
  * RooTCoreBin
  * rcSetup.csh
  * rcSetup.sh

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Next time to setup the area created follow the steps below: 
  - go to "analysis_1" directory 
  - type ''setupATLAS''
  - type ''rcSetup''