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...script run through source() does not have any legit way to learn about it's own location. I need this to make sure that the script will find its datafiles after I move the whole directory. (The datafiles are in the same directory.) Here is a hack I invented to work around it: print(getwd()) source_pathname = get("ofile",envir = parent.frame()) source_dirname = dirname(source_pathname ) setwd(source_dirname) print(getwd()) Question: Is there a better, cleaner way? Thanks, mrgomel [[alternative HTML version deleted]]