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.\" $FreeBSD$ 28.\" 29.Dd August 30, 2001 30.Dt DAEMON 8 31.Os 32.Sh NAME 33.Nm daemon 34.Nd run detached from the controlling terminal 35.Sh SYNOPSIS 36.Nm 37.Op Fl cf 38.Op Fl p Ar pidfile 39.Ar command arguments ... 40.Sh DESCRIPTION 41The 42.Nm 43utility detaches itself from the controlling terminal and 44executes the program specified by its arguments. 45.Pp 46The options are as follows: 47.Bl -tag -width indent 48.It Fl c 49Change the current working directory to the root 50.Pq Dq Pa / . 51.It Fl f 52Redirect standard input, standard output and standard error to 53.Pa /dev/null . 54.It Fl p Ar file 55Write the ID of the created process into the 56.Ar file 57using 58.Xr pidfile 3 59functionality. 60Note, that the file will be created shortly before the process is 61actually executed, and will remain after the process exits (although 62it will be removed if the execution fails). 63.El 64.Sh EXIT STATUS 65The 66.Nm 67utility exits 1 if an error is returned by the 68.Xr daemon 3 69library routine, 2 if the 70.Ar pidfile 71is requested, but cannot be opened, 3 if process is already running (pidfile 72exists and is locked), 73otherwise 0. 74.Sh DIAGNOSTICS 75If the command cannot be executed, an error message is displayed on 76standard error unless the 77.Fl f 78flag is specified. 79.Sh SEE ALSO 80.Xr daemon 3 , 81.Xr exec 3 , 82.Xr pidfile 3 , 83.Xr termios 4 , 84.Xr tty 4 85.Sh HISTORY 86The 87.Nm 88utility first appeared in 89.Fx 4.7 . 90