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.\" $OpenBSD: quiz.6,v 1.9 2014/11/15 14:41:02 bentley Exp $
.\"
.\" Copyright (c) 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Jim R. Oldroyd at The Instruction Set.
.\"
.\" 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.
.\"
.\" @(#)quiz.6 8.1 (Berkeley) 5/31/93
.\"
.Dd $Mdocdate: November 15 2014 $
.Dt QUIZ 6
.Os
.Sh NAME
.Nm quiz
.Nd random knowledge tests
.Sh SYNOPSIS
.Nm quiz
.Op Fl t
.Op Fl i Ar file
.Ar category1 category2
.Sh DESCRIPTION
The
.Nm
utility tests your knowledge of random facts.
It has a database of subjects from which you can choose.
With no arguments,
.Nm
displays the list of available subjects.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl i Ar file
Specify an alternative index file.
.It Fl t
Use tutorial mode, in which questions are repeated later if you didn't get
them right the first time, and new questions are presented less frequently
to help you learn the older ones.
.El
.Pp
Subjects are divided into categories.
You can pick any two categories from the same subject.
.Nm
will ask questions from the first category and it expects answers from
the second category.
For example, the command
.Dq quiz victim killer
asks questions which are
the names of victims, and expects you to answer with the cause of their
untimely demise, whereas the command
.Dq quiz killer victim
works the other way around.
.Pp
If you get the answer wrong,
.Nm
lets you try again.
To see the right answer, enter a blank line.
.Sh INDEX AND DATA FILE SYNTAX
The index and data files have a similar syntax.
Lines in them consist of several categories separated by colons.
The categories are regular expressions formed using the following
meta-characters:
.Pp
.Bl -tag -width "pat|pat" -compact -offset indent
.It pat|pat
alternative patterns
.It {pat}
optional pattern
.It [pat]
delimiters, as in pat[pat|pat]pat
.El
.Pp
In an index file, each line represents a subject.
The first category in each subject is the pathname of the data file for
the subject.
The remaining categories are regular expressions for the titles of each
category in the subject.
.Pp
In data files, each line represents a question/answer set.
Each category is the information for the question/answer for that category.
.Pp
The backslash character
.Pq Sq \e
is used to quote syntactically significant
characters, or at the end of a line to signify that a continuation line
follows.
.Pp
If either a question or its answer is empty,
.Nm
will refrain from asking it.
.Sh FILES
.Bl -tag -width /usr/share/games/quiz.db -compact
.It Pa /usr/share/games/quiz.db
The default index and data files.
.El
.Sh BUGS
.Nm
is pretty cynical about certain subjects.
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