This code demonstrates the workings and 7 step proces of a Linux daemon. I wrote it in a CentOS VM and it's a bit buggy so couldn't complie it.

First: Fork off the pattern process & let it terminate. Second: setsid. Create a new process. Third: catch signals. ignore/handle signals. Fourth: Fork again. This is to allow the pattern process to terminate. Fifth: chdir The working directory of the daemon must be changed. Sixth: umask. this must be change the file mode mask ccording to the daemons needs. Seventh: close. Close all the open file descriptor that may be inherited from the parent process.