158f0484fSRodney W. Grimes.\" Copyright (c) 1993 258f0484fSRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 358f0484fSRodney W. Grimes.\" 458f0484fSRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 558f0484fSRodney W. Grimes.\" modification, are permitted provided that the following conditions 658f0484fSRodney W. Grimes.\" are met: 758f0484fSRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 858f0484fSRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 958f0484fSRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 1058f0484fSRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 1158f0484fSRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 1258f0484fSRodney W. Grimes.\" 3. All advertising materials mentioning features or use of this software 1358f0484fSRodney W. Grimes.\" must display the following acknowledgement: 1458f0484fSRodney W. Grimes.\" This product includes software developed by the University of 1558f0484fSRodney W. Grimes.\" California, Berkeley and its contributors. 1658f0484fSRodney W. Grimes.\" 4. Neither the name of the University nor the names of its contributors 1758f0484fSRodney W. Grimes.\" may be used to endorse or promote products derived from this software 1858f0484fSRodney W. Grimes.\" without specific prior written permission. 1958f0484fSRodney W. Grimes.\" 2058f0484fSRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2158f0484fSRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2258f0484fSRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2358f0484fSRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2458f0484fSRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2558f0484fSRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2658f0484fSRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2758f0484fSRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2858f0484fSRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2958f0484fSRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3058f0484fSRodney W. Grimes.\" SUCH DAMAGE. 3158f0484fSRodney W. Grimes.\" 3258f0484fSRodney W. Grimes.\" @(#)daemon.3 8.1 (Berkeley) 6/9/93 3358f0484fSRodney W. Grimes.Dd June 9, 1993 3458f0484fSRodney W. Grimes.Dt DAEMON 3 3558f0484fSRodney W. Grimes.Os 3658f0484fSRodney W. Grimes.Sh NAME 3758f0484fSRodney W. Grimes.Nm daemon 3858f0484fSRodney W. Grimes.Nd run in the background 3958f0484fSRodney W. Grimes.Sh SYNOPSIS 40712dc76eSMike Pritchard.Fd #include <stdlib.h> 417dd9508fSGary Palmer.Ft int 4258f0484fSRodney W. Grimes.Fn daemon "int nochdir" "int noclose" 4358f0484fSRodney W. Grimes.Sh DESCRIPTION 4458f0484fSRodney W. Grimes.Pp 4558f0484fSRodney W. GrimesThe 4658f0484fSRodney W. Grimes.Fn daemon 4758f0484fSRodney W. Grimesfunction is for programs wishing to detach themselves from the 4858f0484fSRodney W. Grimescontrolling terminal and run in the background as system daemons. 4958f0484fSRodney W. Grimes.Pp 5058f0484fSRodney W. GrimesUnless the argument 5158f0484fSRodney W. Grimes.Fa nochdir 5258f0484fSRodney W. Grimesis non-zero, 5358f0484fSRodney W. Grimes.Fn daemon 5458f0484fSRodney W. Grimeschanges the current working directory to the root (``/''). 5558f0484fSRodney W. Grimes.Pp 5658f0484fSRodney W. GrimesUnless the argument 5758f0484fSRodney W. Grimes.Fa noclose 5858f0484fSRodney W. Grimesis non-zero, 5958f0484fSRodney W. Grimes.Fn daemon 6058f0484fSRodney W. Grimeswill redirect standard input, standard output and standard error 6158f0484fSRodney W. Grimesto ``/dev/null''. 6258f0484fSRodney W. Grimes.Sh ERRORS 637dd9508fSGary PalmerIf an error occurs, 6458f0484fSRodney W. Grimes.Fn daemon 657dd9508fSGary Palmerreturns -1 and sets the global variable 6658f0484fSRodney W. Grimes.Va errno 677dd9508fSGary Palmerto any of the errors specified for the library functions 6858f0484fSRodney W. Grimes.Xr fork 2 6958f0484fSRodney W. Grimesand 7058f0484fSRodney W. Grimes.Xr setsid 2 . 7158f0484fSRodney W. Grimes.Sh SEE ALSO 727dd9508fSGary Palmer.Xr fork 2 , 7358f0484fSRodney W. Grimes.Xr setsid 2 7458f0484fSRodney W. Grimes.Sh HISTORY 7558f0484fSRodney W. GrimesThe 7658f0484fSRodney W. Grimes.Fn daemon 777bdf80e5SMike Pritchardfunction first appeared in 787bdf80e5SMike Pritchard.Bx 4.4 . 79