DAEMON (3)
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
HISTORY
The
daemon ()
function first appeared in BSD4.4.
man3/dbopen.3
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