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+.\"	$NetBSD: nohup.1,v 1.15 2012/03/29 18:33:19 wiz Exp $
+.\"
+.\" Copyright (c) 1989, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)nohup.1	8.1 (Berkeley) 6/6/93
+.\"
+.Dd July 15, 2005
+.Dt NOHUP 1
+.Os
+.Sh NAME
+.Nm nohup
+.Nd invoke a command immune to hangups
+.Sh SYNOPSIS
+.Nm
+.Ar utility
+.Op Ar arg ...
+.Sh DESCRIPTION
+The
+.Nm
+command allows the specified utility to be protected from termination
+if the user should become logged out
+(for example, due to a modem line or TCP/IP connection being dropped).
+To do this,
+.Nm
+sets the
+.Dv SIGHUP
+.Xr signal 3
+.Pq Dq terminal line hangup
+to be ignored,
+then executes
+.Ar utility
+along with any arguments.
+.Pp
+If the standard output is a terminal, the standard output is
+appended to the file
+.Pa nohup.out
+in the current directory.
+If standard error is a terminal, it is directed to the same place
+as the standard output.
+If the output file
+.Pa nohup.out
+cannot be created in the current directory,
+.Nm
+attempts to create the file in the user's home directory.
+If the file
+.Pa nohup.out
+cannot be created,
+either in the current directory or the user's home directory,
+.Nm
+will exit without invoking
+.Ar utility ,
+with an exit value as described below.
+.Sh ENVIRONMENT
+The following variable is used by
+.Nm :
+.Bl -tag -width flag
+.It Ev HOME
+User's home directory.
+.El
+.Sh EXIT STATUS
+The
+.Nm
+utility exits with one of the following values:
+.Bl -tag -width Ds
+.It 126
+The
+.Ar utility
+was found but could not be invoked.
+.It 127
+The
+.Ar utility
+could not be found or an error occurred in
+.Nm .
+.El
+.Pp
+Otherwise, the exit status of
+.Nm
+will be that of
+.Ar utility .
+.Sh SEE ALSO
+.Xr signal 3
+.Sh STANDARDS
+The
+.Nm
+command is expected to be
+.St -p1003.2
+compatible.