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.\"	$NetBSD: fortune.6,v 1.4 1995/03/23 08:28:37 cgd Exp $
.\"
.\" Copyright (c) 1985, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Ken Arnold.
.\"
.\" 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.
.\"
.\"	@(#)fortune.6	8.3 (Berkeley) 4/19/94
.\"
.Dd April 19, 1994
.Dt FORTUNE 6
.Os
.Sh NAME
.Nm fortune
.Nd print a random, hopefully interesting, adage
.Sh SYNOPSIS
.Nm fortune
.Op Fl aefilosw
.Op Fl m Ar pattern
.Oo
.Op Ar N%
.Ar file/dir/all
.Oc
.Sh DESCRIPTION
When
.Nm fortune
is run with no arguments it prints out a random epigram.
Epigrams are divided into several categories, where each category
is subdivided into those which are potentially offensive and those
which are not.
The options are as follows:
.Bl \-tag \-width flag
.It Fl a
Choose from all lists of maxims, both offensive and not.
(See the
.Fl o
option for more information on offensive fortunes.)
.It Fl e
Consider all fortune files to be of equal size (see discussion below
on multiple files).
.It Fl f
Print out the list of files which would be searched, but don't
print a fortune.
.It Fl l
Long dictums only.
.It Fl m
Print out all fortunes which match the regular expression
.Ar pattern .
See
.Xr regex 3
for a description of patterns.
.It Fl o
Choose only from potentially offensive aphorisms.
.Bf \-symbolic
Please, please, please request a potentially offensive fortune if and
only if you believe, deep down in your heart, that you are willing
to be offended.
(And that if you are, you'll just quit using
.Fl o
rather than give us
grief about it, okay?)
.Ef
.Bd \-filled \-offset indent
\&... let us keep in mind the basic governing philosophy
of The Brotherhood, as handsomely summarized in these words:
we believe in healthy, hearty laughter \-\- at the expense of
the whole human race, if needs be.
Needs be.
.Bd \-filled \-offset indent\-two \-compact
\-\-H. Allen Smith, "Rude Jokes"
.Ed
.Ed
.It Fl s
Short apothegms only.
.It Fl i
Ignore case for
.Fl m
patterns.
.It Fl w
Wait before termination for an amount of time calculated from the
number of characters in the message.
This is useful if it is executed as part of the logout procedure
to guarantee that the message can be read before the screen is cleared.
.El
.Pp
The user may specify alternate sayings.
You can specify a specific file, a directory which contains one or
more files, or the special word
.Em all
which says to use all the standard databases.
Any of these may be preceded by a percentage, which is a number
.Ar N
between 0 and 100 inclusive, followed by a
.Ar % .
If it is, there will be a
.Ar N
percent probability that an adage will be picked from that file
or directory.
If the percentages do not sum to 100, and there are specifications
without percentages, the remaining percent will apply to those files
and/or directories, in which case the probability of selecting from
one of them will be based on their relative sizes.
.Pp
As an example, given two databases
.Em funny
and
.Em not\-funny ,
with
.Em funny
twice as big, saying
.Bd \-literal \-offset indent
fortune funny not\-funny
.Ed
.Pp
will get you fortunes out of
.Em funny
two\-thirds of the time.
The command
.Bd \-literal \-offset indent
fortune 90% funny 10% not\-funny
.Ed
.Pp
will pick out 90% of its fortunes from
.Em funny
(the ``10% not\-funny'' is unnecessary, since 10% is all that's left).
The
.Fl e
option says to consider all files equal;
thus
.Bd \-literal \-offset indent
fortune \-e
.Ed
.Pp
is equivalent to
.Bd \-literal \-offset indent
fortune 50% funny 50% not
.Em \-funny
.Ed
.Sh FILES
.Bl \-tag \-width Pa \-compact
.It Pa /usr/share/fortune
.El
.Sh SEE ALSO
.Xr regex 3 ,
.Xr regcmp 3 ,