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.\" Copyright (c) 1985, 1987, 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" 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.
.\"
.\" From: @(#)vacation.1 8.1 (Berkeley) 6/16/93
.\" $Id$
.\"
.Dd June 16, 1993
.Dt VACATION 1
.Os BSD 4.3
.Sh NAME
.Nm vacation
.Nd return ``I am not here'' indication
.Sh SYNOPSIS
.Nm vacation
.Fl i
.Op Fl r Ar interval
.Nm vacation
.Fl l
.Nm vacation
.Op Fl a Ar alias
.Ar login
.Sh DESCRIPTION
.Nm Vacation
returns a message to the sender of a message telling them that you
are currently not reading your mail. The intended use is in a
.Pa .forward
file. For example, your
.Pa .forward
file might have:
.Bd -literal -offset indent
\eeric, "|/usr/bin/vacation -a allman eric"
.Ed
which would send messages to you (assuming your login name was eric) and
reply to any messages for
.Dq eric
or
.Dq allman .
.Pp
Available options:
.Bl -tag -width Ds
.It Fl a Ar alias
Handle messages for
.Ar alias
in the same manner as those received for the user's
login name.
.It Fl i
Initialize the vacation database files. It should be used
before you modify your
.Pa .forward
file.
.It Fl r
Set the reply interval to
.Ar interval
days. The default is one week. An interval of
.Dq 0
means that
a reply is sent to each message, and an interval of
.Dq Li infinite
(actually, any non-numeric character) will never send more than
one reply. It should be noted that intervals of
.Dq Li \&0
are quite
dangerous, as it allows mailers to get into
.Dq I am on vacation
loops.
.It Fl l
Print the contents of the vacation database files. For each entry,
the address the reply has been sent to and the associated time will
be printed to standard output.
.El
.Pp
No message will be sent unless
.Ar login
(or an
.Ar alias
supplied using the
.Fl a
option) is part of either the
.Dq To:
or
.Dq Cc:
headers of the mail.
No messages from
.Dq ???-REQUEST ,
.Dq Postmaster ,
.Dq Tn UUCP ,
.Dq MAILER ,
or
.Dq MAILER-DAEMON
will be replied to (where these strings are
case insensitive) nor is a notification sent if a
.Dq Precedence: bulk
or
.Dq Precedence: junk
line is included in the mail headers.
The people who have sent you messages are maintained as a
.Xr hash 3
database in the file
.Pa .vacation.db
in your home directory.
.Pp
.Nm Vacation
expects a file
.Pa .vacation.msg ,
in your home directory, containing a message to be sent back to each
sender. It should be an entire message (including headers). For
example, it might contain:
.Pp
.Bd -unfilled -offset indent -compact
From: eric@CS.Berkeley.EDU (Eric Allman)
Subject: I am on vacation
Delivered-By-The-Graces-Of: The Vacation program
Precedence: bulk
I am on vacation until July 22. If you have something urgent,
please contact Keith Bostic <bostic@CS.Berkeley.EDU>.
--eric
.Ed
.Pp
.Nm Vacation
reads the first line from the standard input for a
.Ux
.Dq From
line to determine the sender.
.Xr Sendmail 8
includes this
.Dq From
line automatically.
.Pp
Fatal errors, such as calling
.Nm vacation
with incorrect arguments, or with non-existent
.Ar login Ns Ar s ,
are logged in the system log file, using
.Xr syslog 3 .
.Sh FILES
.Bl -tag -width "vacation.dirxxx" -compact
.It Pa ~/.vacation.db
database file
.It Pa ~/.vacation.msg
message to send
.El
.Sh SEE ALSO
.Xr syslog 3 ,
.Xr sendmail 8 ,
.Xr syslogd 8
.Sh HISTORY
The
.Nm vacation
command appeared in
.Bx 4.3 .
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