1.\" $NetBSD: jot.1,v 1.10 2009/03/11 13:53:51 joerg Exp $ 2.\" 3.\" Copyright (c) 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)jot.1 8.1 (Berkeley) 6/6/93 31.\" 32.Dd February 24, 2008 33.Dt JOT 1 34.Os 35.Sh NAME 36.Nm jot 37.Nd print sequential or random data 38.Sh SYNOPSIS 39.Nm 40.Op Fl cnr 41.Bk -words 42.Op Fl b Ar word 43.Ek 44.Bk -words 45.Op Fl p Ar precision 46.Ek 47.Bk -words 48.Op Fl s Ar string 49.Ek 50.Bk -words 51.Op Fl w Ar word 52.Ek 53.Oo Ar reps 54.Oo Ar begin 55.Oo Ar end 56.Op Ar s 57.Oc 58.Oc 59.Oc 60.Sh DESCRIPTION 61The 62.Nm jot 63utility is used to print out increasing, decreasing, random, 64or redundant data (usually numbers) one per line. 65.Pp 66The following options are available: 67.Bl -tag -width indent 68.It Fl b Ar word 69Just print 70.Ar word 71repetitively. 72.It Fl c 73This is an abbreviation for 74.Fl w Ar %c . 75.It Fl n 76Do not print the final newline normally appended to the output. 77.It Fl p Ar precision 78Print only as many digits or characters of the data 79as indicated by the integer 80.Ar precision . 81In the absence of 82.Fl p , 83the precision is the greater of the precisions of 84.Ar begin 85and 86.Ar end . 87The 88.Fl p 89option is overridden by whatever appears in a 90.Xr printf 3 91conversion following 92.Fl w . 93.It Fl r 94Generate random data instead of sequential data, the default. 95.It Fl s Ar string 96Print data separated by 97.Ar string . 98Normally, newlines separate data. 99.It Fl w Ar word 100Print 101.Ar word 102with the generated data appended to it. 103Octal, hexadecimal, exponential, ASCII, zero padded, 104and right-adjusted representations 105are possible by using the appropriate 106.Xr printf 3 107conversion specification inside 108.Ar word , 109in which case the data are inserted rather than appended. 110.El 111.Pp 112The last four arguments indicate, respectively, 113the number of data, the lower bound, the upper bound, 114and the step size or, for random data, the seed. 115While at least one of them must appear, 116any of the other three may be omitted, and 117will be considered as such if given as 118.Dq - . 119Any three of these arguments determines the fourth. 120If four are specified and the given and computed values of 121.Ar reps 122conflict, the lower value is used. 123If fewer than three are specified, defaults are assigned 124left to right, except for 125.Ar s , 126which assumes its default unless both 127.Ar begin 128and 129.Ar end 130are given. 131.Pp 132Defaults for the four arguments are, respectively, 133100, 1, 100, and 1, except that when random data are requested, 134.Ar s 135defaults to a seed depending upon the time of day. 136.Ar reps 137is expected to be an unsigned integer, 138and if given as zero is taken to be infinite. 139.Ar begin 140and 141.Ar end 142may be given as real numbers or as characters 143representing the corresponding value in ASCII. 144The last argument must be a real number. 145.Pp 146Random numbers are obtained through 147.Xr random 3 . 148The name 149.Nm jot 150derives in part from 151.Nm iota , 152a function in APL. 153.Sh EXAMPLES 154The command: 155.Dl "jot 21 \-1 1.00" 156prints 21 evenly spaced numbers increasing from \-1 to 1. 157.Pp 158The command: 159.Dl "jot \-c 128 0" 160prints the ASCII character set. 161.Pp 162The command: 163.Dl "jot \-w xa%c 26 a" 164prints the strings 165.Dq xaa 166through 167.Dq xaz . 168.Pp 169The command: 170.Dl "jot \-r \-c 160 a z | rs \-g 0 8" 171prints 20 random 8-letter strings. 172.Pp 173The command: 174.Dl "jot \-b y 0" 175is equivalent to 176.Xr yes 1 . 177.Pp 178The command: 179.Dl "jot \-w %ds/old/new/ 30 2 \- 5" 180prints thirty 181.Xr ed 1 182substitution commands applying to lines 2, 7, 12, etc. 183.Pp 184The command: 185.Dl "jot 0 9 \- \-.5" 186prints the stuttering sequence 9, 8, 8, 7, etc. 187.Pp 188The command: 189.Dl "jot \-b x 512 \*[Gt] block" 190creates a file containing exactly 1024 bytes. 191.Pp 192The command: 193.Dl "expand \-\`jot \-s, \- 10 132 4\`" 194sets tabs four spaces apart starting 195from column 10 and ending in column 132. 196.Pp 197The command: 198.Dl "grep \`jot \-s """" \-b . 80\`" 199prints all lines 80 characters or longer. 200.Sh SEE ALSO 201.Xr ed 1 , 202.Xr expand 1 , 203.Xr rs 1 , 204.Xr yes 1 , 205.Xr printf 3 , 206.Xr random 3 207