xref: /dragonfly/games/fortune/fortune/fortune.6 (revision 65cc0652)
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31.\"	@(#)fortune.6	8.3 (Berkeley) 4/19/94
32.\" $FreeBSD: head/usr.bin/fortune/fortune/fortune.6 277954 2015-01-30 23:26:03Z cperciva $
33.\"
34.Dd September 1, 2016
35.Dt FORTUNE 6
36.Os
37.Sh NAME
38.Nm fortune
39.Nd "print a random, hopefully interesting, adage"
40.Sh SYNOPSIS
41.Nm
42.Op Fl aDefilosw
43.Op Fl m Ar pattern
44.Oo
45.Op Ar \&N%
46.Ar file Ns / Ns Ar directory Ns / Ns Cm all
47.Oc
48.Sh DESCRIPTION
49When
50.Nm
51is run with no arguments it prints out a random epigram.
52Epigrams are divided into several categories, where each category
53is subdivided into those which are potentially offensive and those
54which are not.
55The options are as follows:
56.Bl -tag -width indent
57.It Fl a
58Choose from all lists of maxims, both offensive and not.
59(See the
60.Fl o
61option for more information on offensive fortunes.)
62.It Fl D
63Enable additional debugging output.
64Specify this option multiple times for more verbose output.
65Only available if compiled with
66.Li -DDEBUG .
67.It Fl e
68Consider all fortune files to be of equal size (see discussion below
69on multiple files).
70.It Fl f
71Print out the list of files which would be searched, but do not
72print a fortune.
73.It Fl l
74Long dictums only.
75.It Fl m Ar pattern
76Print out all fortunes which match the regular expression
77.Ar pattern .
78See
79.Xr regex 3
80for a description of patterns.
81.It Fl o
82Choose only from potentially offensive aphorisms.
83.Bf -symbolic
84Please, please, please request a potentially offensive fortune if and
85only if you believe, deep down in your heart, that you are willing
86to be offended.
87(And that if you are not willing, you will just quit using
88.Fl o
89rather than give us
90grief about it, okay?)
91.Ef
92.Bd -unfilled -offset indent
93\&... let us keep in mind the basic governing philosophy
94of The Brotherhood, as handsomely summarized in these words:
95we believe in healthy, hearty laughter -- at the expense of
96the whole human race, if needs be.  Needs be.
97		--H. Allen Smith, "Rude Jokes"
98.Ed
99.It Fl s
100Short apothegms only.
101.It Fl i
102Ignore case for
103.Fl m
104patterns.
105.It Fl w
106Wait before termination for an amount of time calculated from the
107number of characters in the message.
108This is useful if it is executed as part of the logout procedure
109to guarantee that the message can be read before the screen is cleared.
110.El
111.Pp
112The user may specify alternate sayings.
113You can specify a specific file, a directory which contains one or
114more files, or the special word
115.Cm all
116which says to use all the standard databases.
117Any of these may be preceded by a percentage, which is a number
118.Ar N
119between 0 and 100 inclusive, followed by a
120.Ql % .
121If it is, there will be a
122.Ar N
123percent probability that an adage will be picked from that file
124or directory.
125If the percentages do not sum to 100, and there are specifications
126without percentages, the remaining percent will apply to those files
127and/or directories, in which case the probability of selecting from
128one of them will be based on their relative sizes.
129.Pp
130As an example, given two databases
131.Pa funny
132and
133.Pa not-funny ,
134with
135.Pa funny
136twice as big, saying
137.Pp
138.Dl "fortune funny not-funny"
139.Pp
140will get you fortunes out of
141.Pa funny
142two-thirds of the time.
143The command
144.Pp
145.Dl "fortune 90% funny 10% not-funny"
146.Pp
147will pick out 90% of its fortunes from
148.Pa funny
149(the
150.Dq Li "10% not-funny"
151is unnecessary, since 10% is all that is left).
152The
153.Fl e
154option says to consider all files equal;
155thus
156.Pp
157.Dl "fortune -e funny not-funny"
158.Pp
159is equivalent to
160.Pp
161.Dl "fortune 50% funny 50% not-funny"
162.Sh ENVIRONMENT
163.Bl -tag -width ".Ev FORTUNE_SAVESTATE"
164.It Ev FORTUNE_PATH
165The search path for the data files.
166It is a colon-separated list of directories in which
167.Nm
168looks for data files.
169If not set it will default to
170.Pa /usr/share/games/fortune .
171If none of the directories specified exist, it will print a warning and exit.
172.It Ev FORTUNE_SAVESTATE
173If set, fortune will save some state about what fortune
174it was up to on disk.
175.El
176.Sh FILES
177.Bl -tag -width ".Pa /usr/share/games/fortune/*"
178.It Pa /usr/games/fortune
179.It Pa /usr/share/games/fortune/*
180the fortunes databases (those files ending
181.Dq Pa -o
182contain the
183.Sy offensive
184fortunes)
185.El
186.Sh SEE ALSO
187.Xr arc4random_uniform 3 ,
188.Xr regcomp 3 ,
189.Xr regex 3 ,
190.Xr strfile 8
191