You (can) set environment variables in o .cshrc (if your shell is csh or tcsh) Syntax: setenv R_LIBS /u/etlfs/dev/users/leedsmar/R/library o .bashrc (if your shell is bash) Syntax: R_LIBS=/u/etlfs/dev/users/leedsmar/R/library export R_LIBS HTH. cheers, Rolf Turner rolf at math.unb.ca