206 lines
5.3 KiB
Groff
206 lines
5.3 KiB
Groff
.\" $NetBSD: jot.1,v 1.8 2004/11/22 17:34:24 peter Exp $
|
|
.\"
|
|
.\" Copyright (c) 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. 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.
|
|
.\"
|
|
.\" @(#)jot.1 8.1 (Berkeley) 6/6/93
|
|
.\"
|
|
.Dd November 1, 1997
|
|
.Dt JOT 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm jot
|
|
.Nd print sequential or random data
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl cnr
|
|
.Bk -words
|
|
.Op Fl b Ar word
|
|
.Ek
|
|
.Bk -words
|
|
.Op Fl p Ar precision
|
|
.Ek
|
|
.Bk -words
|
|
.Op Fl s Ar string
|
|
.Ek
|
|
.Bk -words
|
|
.Op Fl w Ar word
|
|
.Ek
|
|
.Oo Ar reps
|
|
.Oo Ar begin
|
|
.Oo Ar end
|
|
.Op Ar s
|
|
.Oc
|
|
.Oc
|
|
.Oc
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm jot
|
|
utility is used to print out increasing, decreasing, random,
|
|
or redundant data (usually numbers) one per line.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width indent
|
|
.It Fl b Ar word
|
|
Just print
|
|
.Ar word
|
|
repetitively.
|
|
.It Fl c
|
|
This is an abbreviation for \fB\-w %c\fP.
|
|
.It Fl n
|
|
Do not print the final newline normally appended to the output.
|
|
.It Fl p Ar precision
|
|
Print only as many digits or characters of the data
|
|
as indicated by the integer
|
|
.Ar precision .
|
|
In the absence of
|
|
.Fl p ,
|
|
the precision is the greater of the precisions of
|
|
.Ar begin
|
|
and
|
|
.Ar end .
|
|
The
|
|
.Fl p
|
|
option is overridden by whatever appears in a
|
|
.Xr printf 3
|
|
conversion following
|
|
.Fl w .
|
|
.It Fl r
|
|
Generate random data instead of sequential data, the default.
|
|
.It Fl s Ar string
|
|
Print data separated by
|
|
.Ar string .
|
|
Normally, newlines separate data.
|
|
.It Fl w Ar word
|
|
Print
|
|
.Ar word
|
|
with the generated data appended to it.
|
|
Octal, hexadecimal, exponential, ASCII, zero padded,
|
|
and right-adjusted representations
|
|
are possible by using the appropriate
|
|
.Xr printf 3
|
|
conversion specification inside
|
|
.Ar word ,
|
|
in which case the data are inserted rather than appended.
|
|
.El
|
|
.Pp
|
|
The last four arguments indicate, respectively,
|
|
the number of data, the lower bound, the upper bound,
|
|
and the step size or, for random data, the seed.
|
|
While at least one of them must appear,
|
|
any of the other three may be omitted, and
|
|
will be considered as such if given as
|
|
.Dq - .
|
|
Any three of these arguments determines the fourth.
|
|
If four are specified and the given and computed values of
|
|
.Ar reps
|
|
conflict, the lower value is used.
|
|
If fewer than three are specified, defaults are assigned
|
|
left to right, except for
|
|
.Ar s ,
|
|
which assumes its default unless both
|
|
.Ar begin
|
|
and
|
|
.Ar end
|
|
are given.
|
|
.Pp
|
|
Defaults for the four arguments are, respectively,
|
|
100, 1, 100, and 1, except that when random data are requested,
|
|
.Ar s
|
|
defaults to a seed depending upon the time of day.
|
|
.Ar reps
|
|
is expected to be an unsigned integer,
|
|
and if given as zero is taken to be infinite.
|
|
.Ar begin
|
|
and
|
|
.Ar end
|
|
may be given as real numbers or as characters
|
|
representing the corresponding value in ASCII.
|
|
The last argument must be a real number.
|
|
.Pp
|
|
Random numbers are obtained through
|
|
.Xr random 3 .
|
|
The name
|
|
.Nm jot
|
|
derives in part from
|
|
.Nm iota ,
|
|
a function in APL.
|
|
.Sh EXAMPLES
|
|
The command:
|
|
.Dl "jot 21 \-1 1.00"
|
|
prints 21 evenly spaced numbers increasing from \-1 to 1.
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-c 128 0"
|
|
prints the ASCII character set.
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-w xa%c 26 a"
|
|
prints the strings
|
|
.Dq xaa
|
|
through
|
|
.Dq xaz .
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-r \-c 160 a z | rs \-g 0 8"
|
|
prints 20 random 8-letter strings.
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-b y 0"
|
|
is equivalent to
|
|
.Xr yes 1 .
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-w %ds/old/new/ 30 2 \- 5"
|
|
prints thirty
|
|
.Xr ed 1
|
|
substitution commands applying to lines 2, 7, 12, etc.
|
|
.Pp
|
|
The command:
|
|
.Dl "jot 0 9 \- \-.5"
|
|
prints the stuttering sequence 9, 9, 8, 8, 7, etc.
|
|
.Pp
|
|
The command:
|
|
.Dl "jot \-b x 512 \*[Gt] block"
|
|
creates a file containing exactly 1024 bytes.
|
|
.Pp
|
|
The command:
|
|
.Dl "expand \-\`jot \-s, \- 10 132 4\`"
|
|
sets tabs four spaces apart starting
|
|
from column 10 and ending in column 132.
|
|
.Pp
|
|
The command:
|
|
.Dl "grep \`jot \-s """" \-b . 80\`"
|
|
prints all lines 80 characters or longer.
|
|
.Sh SEE ALSO
|
|
.Xr ed 1 ,
|
|
.Xr expand 1 ,
|
|
.Xr rs 1 ,
|
|
.Xr yes 1 ,
|
|
.Xr printf 3 ,
|
|
.Xr random 3
|