Hi! I'm tying to install Root (physics data analysis program) an in the installation guid is saying: #!/bin/bash ALIEN_ROOT=/afs/cern.ch/alice/library/afs_volumes/vol01/alien ./configure \ --with-pythia6-uscore=SINGLE \ --enable-alien --with-alien-incdir=${ALIEN_ROOT}/api/include \ --with-alien-libdir=${ALIEN_ROOT}/api/lib Wath do I have to do? Is this #!/bin/bash -ALIEN_ROOT=/afs/cern.ch/alice/library/afs_volumes/vol01/alien commands or do I have to write this in a file? In that case, what file? Next is says #!/bin/bash make cd test make export LD LIBRARY PATH=$LD_LIBRARY_PATH:. ./stress ./stressHepix what is #!/bin/bash refering to? Is this commands I have to write in my terminal window? Thanks!