1.\" $NetBSD: jot.1,v 1.16 2018/06/25 14:29:17 christos 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 June 25, 2018 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. 107Any argument may be omitted, and 108will be considered as such if given as 109.Dq - . 110Any three of these arguments determines the fourth. 111If four are specified and the given and computed values of 112.Ar reps 113conflict, the lower value is used. 114If fewer than three are specified, defaults are assigned 115left to right, except for 116.Ar s , 117which assumes its default unless both 118.Ar begin 119and 120.Ar end 121are given. 122.Pp 123Defaults for the four arguments are, respectively, 124100, 1, 100, and 1, except that when random data are requested, 125.Ar s 126defaults to a seed depending upon the time of day. 127.Ar reps 128is expected to be an unsigned integer, 129and if given as zero is taken to be infinite. 130.Ar begin 131and 132.Ar end 133may be given as real numbers or as characters 134representing the corresponding value in ASCII. 135The last argument must be a real number. 136.Pp 137Random numbers are obtained through 138.Xr random 3 . 139The name 140.Nm jot 141derives in part from 142.Nm iota , 143a function in APL. 144.Sh EXAMPLES 145The command: 146.Dl "jot - 42 87 1" 147prints the integers from 42 to 87, inclusive. 148.Pp 149The command: 150.Dl "jot 21 \-1 1.00" 151prints 21 evenly spaced numbers increasing from \-1 to 1. 152.Pp 153The command: 154.Dl "jot \-c 128 0" 155prints the ASCII character set. 156.Pp 157The command: 158.Dl "jot \-w xa%c 26 a" 159prints the strings 160.Dq xaa 161through 162.Dq xaz . 163.Pp 164The command: 165.Dl "jot \-r \-c 160 a z | rs \-g 0 8" 166prints 20 random 8-letter strings. 167.Pp 168The command: 169.Dl "jot \-b y 0" 170is equivalent to 171.Xr yes 1 . 172.Pp 173The command: 174.Dl "jot \-w %ds/old/new/ 30 2 \- 5" 175prints thirty 176.Xr ed 1 177substitution commands applying to lines 2, 7, 12, etc. 178.Pp 179The command: 180.Dl "jot 0 9 \- \-.5" 181prints the stuttering sequence 9, 8, 8, 7, etc. 182.Pp 183The command: 184.Dl "jot \-b x 512 > block" 185creates a file containing exactly 1024 bytes. 186.Pp 187The command: 188.Dl "expand \-\`jot \-s, \- 10 132 4\`" 189sets tabs four spaces apart starting 190from column 10 and ending in column 132. 191.Pp 192The command: 193.Dl "grep \`jot \-s """" \-b . 80\`" 194prints all lines 80 characters or longer. 195.Sh SEE ALSO 196.Xr ed 1 , 197.Xr expand 1 , 198.Xr rs 1 , 199.Xr seq 1 , 200.Xr yes 1 , 201.Xr printf 3 , 202.Xr random 3 203.Sh HISTORY 204The 205.Nm 206utility first appeared in 207.Bx 4.2 . 208.Sh AUTHORS 209.An John A. Kunze 210