Hi, On Thu, Jan 13, 2005 at 01:07:29PM -0500, Jim Bauer told us: > > exactly i want to scan through the log file and extract my useful > > messages to myfile and this program will work as a deamon > > Then you certainly shouldn't need to use syscall3 or write any kernel > code. Except for the daemon aspect, grep might be all you really need. and for the daemon aspect, you could look at what "tail -f" does to output appended lines as they are written to the file. See man tail for what it does and the coreutils-sources at ftp://alpha.gnu.org/gnu/coreutils/coreutils-5.3.0.tar.gz for how it does it :-) HTH Sven -- Linux zion 2.6.10-bk7 #0 Fri Jan 7 19:08:39 CET 2005 i686 athlon i386 GNU/Linux 19:56:28 up 6 days, 33 min, 2 users, load average: 0.05, 0.05, 0.01 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/