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+.\" 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. 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
+.\" $FreeBSD: src/usr.bin/nohup/nohup.1,v 1.13 2005/01/17 07:44:27 ru Exp $
+.\"
+.Dd July 19, 2001
+.Dt NOHUP 1
+.Os
+.Sh NAME
+.Nm nohup
+.Nd invoke a utility immune to hangups
+.Sh SYNOPSIS
+.Nm
+.Op Fl Fl
+.Ar utility
+.Op Ar arguments
+.Sh DESCRIPTION
+The
+.Nm
+utility invokes
+.Ar utility
+with its
+.Ar arguments
+and at this time sets the signal
+.Dv SIGHUP
+to be ignored.
+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.
+.Pp
+Some shells may provide a builtin
+.Nm
+command which is similar or identical to this utility.
+Consult the
+.Xr builtin 1
+manual page.
+.Sh ENVIRONMENT
+The following variables are utilized by
+.Nm :
+.Bl -tag -width flag
+.It Ev HOME
+If the output file
+.Pa nohup.out
+cannot be created in the current directory, the
+.Nm
+utility uses the directory named by
+.Ev HOME
+to create the file.
+.It Ev PATH
+Used to locate the requested
+.Ar utility
+if the name contains no
+.Ql /
+characters.
+.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 builtin 1 ,
+.Xr csh 1 ,
+.Xr signal 3
+.Sh STANDARDS
+The
+.Nm
+utility is expected to be
+.St -p1003.2
+compatible.
+.Sh BUGS
+Two or more instances of
+.Nm
+can append to the same file, which makes for a confusing output.