To setup a CMSSW environment, the local users should do as follows:

#First setup grid environment
source /opt/osg/setup.sh


#setup CMS software environment
source /apps/02/cmssoft/cms/cmsset_default.sh
or source /apps/02/purdueCMS/cmsset_default.sh

#setup cvs root
#for users want to check out cmssw outside of cern
CVSROOT=:pserver: This email address is being protected from spam bots, you need Javascript enabled to view it :/cvs_server/repositories/CMSSW
export CVSROOT
#for users at cern
cmscvsroot CMSSW

#create a local working area of CMSSW
scarmv1 project CMSSW CMSSW_version

#checkout cmssw source code into the directory CMSSW_version/src/
cvs login
#at the prompt enter the password 98passwd
cd CMSSW_version/src

#then checkout RecoMuon/DetLayers code to your working area
cvs co -r CMSSW_version RecoMuon/DetLayers

#build the source code
cd RecoMuon/DetLayers/src
eval `scramv1 runtime -sh`
scramv1 b

#run the executable file
cd ../
cmsRun -p test/testRecoGeometry.cfg
output will be shown on the screen