====== Zurich ROOT environment ====== To have ROOT working on openSUSE and on the SLC5 machines, you can set something like the following lines (this is for a zsh!) in your startup files (e.g. zshrc for a zsh): if [[ -f /etc/SuSE-release ]]; then export ROOTSYS=${CERN}/root5.26.00a export PATH=${PATH}:${ROOTSYS}/bin export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${ROOTSYS}/lib fi This will set the ROTTSYS variable only on openSUSE systems and will leave it empty for SLC5 system, where you should pick up the LHCb ROOT version.