daemon - run in the background
SYNOPSIS
#include <unistd.h>
int daemon (int nochdir, int noclose);
DESCRIPTION
The daemon() function is for programs wishing to detach
themselves from the controlling terminal and run in the
background as system daemons.
Unless the argument nochdir is non-zero, daemon() changes
the current working directory to the root (``/'').
Unless the argument noclose is non-zero, daemon() will
redirect standard input, standard output and standard
error to /dev/null.
ERRORS
If an error occurs, daemon() returns -1 and sets the
global variable errno to any of the errors specified for
the library functions fork(2) and setsid(2).
SEE ALSO
fork(2), setsid(2)
HISTORY
The daemon() function first appeared in BSD4.4.
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