http://www.ibm.com/developerworks/cn/linux/l-ipc/part1/index.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part2/index1.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part2/index2.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part3/index.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part4/index.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part4/index.html
http://www.ibm.com/developerworks/cn/linux/l-ipc/part5/index2.html