1.\" Copyright (c) 1999 Berkeley Software Design, Inc. All rights reserved. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 3. Berkeley Software Design Inc's name may not be used to endorse or 12.\" promote products derived from this software without specific prior 13.\" written permission. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/usr.sbin/daemon/daemon.8,v 1.2.2.2 2003/02/05 03:30:32 trhodes Exp $ 28.\" $DragonFly: src/usr.sbin/daemon/daemon.8,v 1.3 2004/12/21 23:30:57 liamfoy Exp $ 29.\" 30.Dd August 30, 2001 31.Dt DAEMON 8 32.Os 33.Sh NAME 34.Nm daemon 35.Nd run detached from the controlling terminal 36.Sh SYNOPSIS 37.Nm 38.Op Fl cf 39.Op Fl p Ar pidfile 40.Ar command arguments ... 41.Sh DESCRIPTION 42The 43.Nm 44utility detaches itself from the controlling terminal and 45executes the program specified by its arguments. 46.Pp 47The options are as follows: 48.Bl -tag -width indent 49.It Fl c 50Change the current working directory to the root 51.Pq Dq Pa / . 52.It Fl f 53Redirect standard input, standard output and standard error to 54.Pa /dev/null . 55.It Fl p Ar file 56Write the ID of the created process into the 57.Ar file . 58Note, that the file will be created shortly before the process is 59actually executed, and will remain after the process exits (although 60it will be removed if the execution fails). 61.El 62.Sh DIAGNOSTICS 63The 64.Nm 65utility exits 1 if an error is returned by the 66.Xr daemon 3 67library routine, 2 if the pid-file is requested, but can not be opened, 68otherwise it will return 0. 69If the command cannot be executed, an error message is displayed on 70standard error unless the 71.Fl f 72flag is specified. 73.Sh SEE ALSO 74.Xr daemon 3 , 75.Xr exec 3 , 76.Xr termios 4 , 77.Xr tty 4 78.Sh HISTORY 79The 80.Nm 81utility first appeared in 82.Fx 4.7 . 83