> Of course only LD_LIBRARY_PATH seems to be documented in the man pages. > Maybe someone from Sun can comment on what the rest of these do (please?) Well, I'm not from Sun, (ok, I guess I am, I used to work there), but maybe I'll do. LD_TRACE_LOADED_OBJECTS is what makes 'ldd' work. LD_PROFILE calls 'profil' leaving the results in /tmp/ld.so.profile_buffer LD_SYMBOLS_PUBLIC leaves the symbols from ld.so around for a debugger to get 'hold of LD_PRELOAD works as described, though the source says its not to be documented. LD_LIBRARY_PATH you know about Jim