Hi, you can try this command: grep -r \\\"getifaddrs\\\" /usr/src/linux Sorry, this command is ok. (no get -r ....) but grep -r .... Mato -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/