A beta version of sysv ipc is now available. Messages, semaphores and shared memory are implemented. It was tested with linux-0.99 but should work with linux-0.98p4. FILES: You can get ipcbeta.tar.Z from tsx-11.mit.edu pub/linux/patches/. Untar ipcbeta.tar.Z to get a directory ipc. There is a README file in ipc/ that describes installation. The subdirectory ipc/test contains user programs and documentation. COPYING: The files are distributed under the GNU copyleft. There's a copy in the file ...src/linux/COPYING with the linux distribution. Send any comments/suggestions/questions to me at balasub@cis.ohio-state.edu krishna NOTE: current version, ipcbeta+, has more, and is for a newer kernel. (.99.4 ?) -mkj