If by daemon process you mean one that's detached (disassociated from its
tty), then the following process is reported to work on most Unixish
systems. Non-Unix users should check their Your_OS::Process module for
other solutions.
-
Open /dev/tty and use the the
TIOCNOTTY ioctl on it. See tty(4)
for details.
-
Change directory to /
-
Reopen
STDIN,
STDOUT, and
STDERR so they're not connected to the old tty.
-
Background yourself like this:
fork && exit;