> Thanks for your answer > > unfortunately you 're right > > i only have python and bash available. > Then i guess i should begin laern some python to convert my script to > backup keys of ssh and cfengine. You can always try and use a NFS mount or something similar: %pre --interpreter /bin/sh mkdir /nfs nfsmount server:/usr /nfs %pre --interpreter /nfs/bin/perl Your code here No guarantees, but it might work :) Cipri