1.\" $NetBSD: jot.1,v 1.12 2012/04/08 22:00:39 wiz 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 January 5, 2010 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.Op Fl b Ar word 42.Op Fl p Ar precision 43.Op Fl s Ar string 44.Op Fl w Ar word 45.Oo Ar reps 46.Oo Ar begin 47.Oo Ar end 48.Op Ar s 49.Oc 50.Oc 51.Oc 52.Sh DESCRIPTION 53The 54.Nm jot 55utility is used to print out increasing, decreasing, random, 56or redundant data (usually numbers) one per line. 57.Pp 58The following options are available: 59.Bl -tag -width indent 60.It Fl b Ar word 61Just print 62.Ar word 63repetitively. 64.It Fl c 65This is an abbreviation for 66.Fl w Ar %c . 67.It Fl n 68Do not print the final newline normally appended to the output. 69.It Fl p Ar precision 70Print only as many digits or characters of the data 71as indicated by the integer 72.Ar precision . 73In the absence of 74.Fl p , 75the precision is the greater of the precisions of 76.Ar begin 77and 78.Ar end . 79The 80.Fl p 81option is overridden by whatever appears in a 82.Xr printf 3 83conversion following 84.Fl w . 85.It Fl r 86Generate random data instead of sequential data, the default. 87.It Fl s Ar string 88Print data separated by 89.Ar string . 90Normally, newlines separate data. 91.It Fl w Ar word 92Print 93.Ar word 94with the generated data appended to it. 95Octal, hexadecimal, exponential, ASCII, zero padded, 96and right-adjusted representations 97are possible by using the appropriate 98.Xr printf 3 99conversion specification inside 100.Ar word , 101in which case the data are inserted rather than appended. 102.El 103.Pp 104The last four arguments indicate, respectively, 105the number of data, the lower bound, the upper bound, 106and the step size or, for random data, the seed. 107While at least one of them must appear, 108any of the other three may be omitted, and 109will be considered as such if given as 110.Dq - . 111Any three of these arguments determines the fourth. 112If four are specified and the given and computed values of 113.Ar reps 114conflict, the lower value is used. 115If fewer than three are specified, defaults are assigned 116left to right, except for 117.Ar s , 118which assumes its default unless both 119.Ar begin 120and 121.Ar end 122are given. 123.Pp 124Defaults for the four arguments are, respectively, 125100, 1, 100, and 1, except that when random data are requested, 126.Ar s 127defaults to a seed depending upon the time of day. 128.Ar reps 129is expected to be an unsigned integer, 130and if given as zero is taken to be infinite. 131.Ar begin 132and 133.Ar end 134may be given as real numbers or as characters 135representing the corresponding value in ASCII. 136The last argument must be a real number. 137.Pp 138Random numbers are obtained through 139.Xr random 3 . 140The name 141.Nm jot 142derives in part from 143.Nm iota , 144a function in APL. 145.Sh EXAMPLES 146The command: 147.Dl "jot - 42 87 1" 148prints the integers from 42 to 87, inclusive. 149.Pp 150The command: 151.Dl "jot 21 \-1 1.00" 152prints 21 evenly spaced numbers increasing from \-1 to 1. 153.Pp 154The command: 155.Dl "jot \-c 128 0" 156prints the ASCII character set. 157.Pp 158The command: 159.Dl "jot \-w xa%c 26 a" 160prints the strings 161.Dq xaa 162through 163.Dq xaz . 164.Pp 165The command: 166.Dl "jot \-r \-c 160 a z | rs \-g 0 8" 167prints 20 random 8-letter strings. 168.Pp 169The command: 170.Dl "jot \-b y 0" 171is equivalent to 172.Xr yes 1 . 173.Pp 174The command: 175.Dl "jot \-w %ds/old/new/ 30 2 \- 5" 176prints thirty 177.Xr ed 1 178substitution commands applying to lines 2, 7, 12, etc. 179.Pp 180The command: 181.Dl "jot 0 9 \- \-.5" 182prints the stuttering sequence 9, 8, 8, 7, etc. 183.Pp 184The command: 185.Dl "jot \-b x 512 \*[Gt] block" 186creates a file containing exactly 1024 bytes. 187.Pp 188The command: 189.Dl "expand \-\`jot \-s, \- 10 132 4\`" 190sets tabs four spaces apart starting 191from column 10 and ending in column 132. 192.Pp 193The command: 194.Dl "grep \`jot \-s """" \-b . 80\`" 195prints all lines 80 characters or longer. 196.Sh SEE ALSO 197.Xr ed 1 , 198.Xr expand 1 , 199.Xr rs 1 , 200.Xr seq 1 , 201.Xr yes 1 , 202.Xr printf 3 , 203.Xr random 3 204