`jottable` *column* [-cnr] [-s] [-p] [-w *string*] [*reps* [*begin* [*end* [*s*]]]]
jottable is used to print out increasing, decreasing, random, or redundant
data column of data, usually numbers.
The following options are available:
* -r
Generate random data instead of the default sequential data.
* -b *word*
Just print *word* repetitively.
* -w *word*
Print *word* with the generated data appended to it. Octal,
hexadecimal, exponential, `ASCII` , zero padded, and right-adjusted
representations are possible by using the appropriate `printf(3)`
conversion specification inside *word* , in which case the data
are inserted rather than appended.
* -c
This is an abbreviation for "-w %c".
* -p *precision*
Print only as many digits or characters of the data as indicated
by the integer *precision*. In the absence of -p, the precision
is the greater of the precisions of *begin* and *end*. The -p
option is overridden by whatever appears in a `printf(3)` conversion
following -w.
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 "".
Any three of these arguments determines the fourth. If four are specified
and the given and computed values of *reps* conflict, the lower value is
used. If fewer than three are specified, defaults are assigned left to
right, except for *s* , which assumes its default unless both *begin* and
*end* are given.
Defaults for the four arguments are, respectively, 100, 1, 100, and 1,
except that when random data are requested, the seed, *s* , is picked
randomly. *Reps* is expected to be an unsigned integer, and if given as
zero is taken to be infinite. *Begin* and *end* may be given as real
numbers or as characters representing the corresponding value in `ASCII` .
The last argument must be a real number.
Random numbers are obtained through `random(3)` . The name `jot` derives in
part from `iota` , a function in APL.
The command
jottable X 21 -1 1.00
prints 21 evenly spaced numbers increasing from -1 to 1 in column X.
The ASCII character set is generated with
jottable ASCII -c 128 0
and the strings xaa through xaz with
jottable TmpFile -w xa%c 26 a
while 20 random 8-letter strings are produced with
jottable TmpFile -r -c 160 a z | rs -g 0 8"
Infinitely many yes's may be obtained through
jottable Yes -b yes 0
and thirty ed substitution commands applying to lines 2, 7, 12, etc. is the result of
jottable ed -w %ds/old/new/ 30 2 - 5
The stuttering sequence 9, 9, 8, 8, 7, etc. can be produced by suitable choice of precision and step size, as in
jottable Sequence 9 - -.5
- Copyright (c) 1993
- The Regents of the University of California. All rights reserved.
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- This product includes software developed by the University of
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