I could not find mqueue.h file on my m/c. I dont know wat to do now..plz help me. I searched over /usr directory. beacause of that I could not practise the posix message queue programms at all. I have RedHat EL 3.0 on Pentium IV m/c. thanx in advance. Regards, Jaydeep. __________________________________ Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. http://info.mail.yahoo.com/mail_250 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/