How to program a daemon?

[Knudson]

Hi all

i wrote a simple C program for automated video recording for security reasons, it works good and it runs from shell, so i don't need any KDE or Gnome or whatever. But, here's my problem: that computer is a blind pc (no monitor and in an unreachable place) so i need to control it remotely : the problem is that if i use SSH to launch the program when i close the ssh session, it kills also the program. Now i've workarounded it using vnc :| but it's really a waste of resources. So , my question is: how do i make that program a daemon? I need something like amueld -f

Program is in C/C++ and is running under FC5, any advice or link is welcome, thanks

[brunson]

You call fork(), which clones your process space into two processes, then exit from the parent process. Read the man page for fork(2) for specifics. You can also try using "nohup" from the shell you're starting in.

[Knudson]

and will it work with fork? If the parent process dies then also the child process will..or not?

[ms1234]

Why not run it under screen?

[markkuk]

See the daemon() function, "man 3 daemon".

[brunson]

and will it work with fork? If the parent process dies then also the child process will..or not?

It's five lines of code, try it and find out.

[Knudson]

Markkuk thanks a lot, that's what i needed !