1.\" Copyright (c) 1989, 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)nohup.1 6.8 (Berkeley) 7/27/91 36.\" 37.Dd July 27, 1991 38.Dt NOHUP 1 39.Os 40.Sh NAME 41.Nm nohup 42.Nd invoke a command immune to hangups 43.Sh SYNOPSIS 44.Nm nohup 45.Ar command 46.Op Ar arg ... 47.Sh DESCRIPTION 48The 49.Nm nohup 50utility invokes 51.Ar command 52with 53its arguments 54and at this time sets the signal 55.Dv SIGHUP 56to be ignored. The signal 57.Dv SIGQUIT 58may also be set 59to be ignored. 60If the standard output is a terminal, the standard output is 61appended to the file 62.Pa nohup.out 63in the current directory. 64If standard error is a terminal, it is directed to the same place 65as the standard output. 66.Pp 67.Nm Nohup 68exits 1 if an error occurs, otherwise the exit status is that of 69.Ar command . 70.Sh ENVIRONMENT 71The following variable is utilized by 72.Nm nohup . 73.Bl -tag -width flag 74.It Ev HOME 75If the output file 76.Pa nohup.out 77cannot be created in the current directory, the 78.Nm nohup 79utility uses the directory named by 80.Ev HOME 81to create the file. 82.El 83.Sh SEE ALSO 84.Xr signal 3 85.Sh STANDARDS 86The 87.Nm nohup 88command is expected to be 89.St -p1003.2 90compatible. 91