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.