numrange(1)
Print out a range of numbers for use in for loops and such.
SYNOPSIS
numrange [-dhV] /<expression>/
DESCRIPTION
numrange
will print out a list of numbers based on an expression that you specify. This
is useful for making a list of numbers for use in for loops and so on.
Ranges are inclusive.
Ranges of
numbers are specified using the .. operator, like this /20..50/, which means all
integers from 20 to 50 inclusive. More complex expressions can be generated using the commas
and the 'i' increment operator.
OPTIONS
-e <set> Exclude the <set> of numbers from the range output. <set>
is a set of numbers separated by commas.
-n <n> Use <n> as the separator between numbers. By default, it
will use a space. Use '\n' or \\n for a newline character or
use the -N option.
-N Just a quick option for using a newline as the separator.
-h Help: You're looking at it.
-V Increase verbosity.
-d Debug mode. For developers
EXAMPLES
All numbers from 1 to 10.
$ numrange /1..10/
1 2 3 4 5 6 7 8 9 10
From 10 to 1. Counting down.
$ numrange /10..1/
10 9 8 7 6 5 4 3 2 1
From 1 to 10 and from 15 to 20.
$ numrange /1..10,15..20/
1 2 3 4 5 6 7 8 9 10 15 16 17 18 19 20
Even numbers from 0 to 10
$ numrange /0..10i2/
0 2 4 6 8 10
Odd numbers. Notice the starting number in the range expression.
$ numrange /1..10i2/
1 3 5 7 9
Factors of 3 between 99 and 120.
$ numrange /99..120i3/
99 102 105 108 111 114 117 120
Decimal numbers
$ numrange /1.1..2.5i0.1/
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5
And negative numbers too.
$ numrange /1.0..-2.0i0.3/
1 0.7 0.4 0.1 -0.2 -0.5 -0.8 -1.1 -1.4 -1.7 -2
You can also pad numbers when you are counting up. This is
a trick of how the Perl programming language deals with ranges:
$ numrange /01..15/
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
BUGS
Even though you can do zero padding on simple ranges, like 001..100,
it will not pad zeros on complex ranges like 001..100i2, or for counting
downwards.
COPYRIGHT
numrange is part of the num-utils package, which is copyrighted by
Suso Banderas and released under the
GPL license. Please read
the
COPYING and
LICENSE files that came with the num-utils package
Developers can read the GOALS file and contact me about providing
submitions or help for the project.
