man 5 core; http://www.kernel.org/doc/man-pages/online/pages/man5/core.5.html The example section has a sample shell session containing: # echo '|$PWD/core_pattern_pipe_test %p UID=%u GID=%g sig=%s' But $PWD won't be expanded in single quotes. It should be double quotes around the entire argument or some other form. Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html