## table of contents

NUMPROCESS(1) | User Contributed Perl Documentation | NUMPROCESS(1) |

# NAME¶

numprocess - This program mutates numbers as it encounters them.

# SYNOPSIS¶

**numprocess** [-dhV] /<expression>/ [FILE or STDIN]

| **numprocess** [-dhV] /<expression>/ (Input on STDIN
from pipeline.)

**numprocess** [-dhV] /<expression>/ (Input on STDIN. Use
Ctrl-D to stop.)

# DESCRIPTION¶

**numprocess** will take as one argument, a list of operations
to be performed on numbers that it encounters. It will perform those
operations on each number and return the result in place of the original
number.

# USAGE EXAMPLES¶

Add 1 to all numbers. $ numprocess /+1/ file1 Convert all numbers from miles to kilometers. Multiply by 8 and divide by 5. $ cat file1 | numprocess /*8,%5/ Convert from celcius to fahreheit degrees. Multiply by 9, divide by 5 and add 32. $ numprocess /*9,%5,+32/ temperatures Find the area of each circle from the given radius. $ numprocess /^2,*pi/ radii

# KEYWORDS AND OPERATORS¶

For operators, the modifying number goes directly after the operator, with the exception of functions like sqrt, sin, cos, etc. + Addition - Subtraction * Multiplication % Division ^ Power function sqrt Square Root (*) sin Sine function cos Cosine function Constants and keywords that can be used pi 3.141592654 e 2.718281828 (*) When using the sqrt operation on negative numbers, it will take the absolute value of the number, sqrt it and then tack an i on the end of the result to signify that the resulting number is imaginary.

# OPTIONS¶

-h Help: You're looking at it. -V Increase verbosity. -d Debug mode. For developers

# SEE ALSO¶

numaverage(1), numbound(1), numinterval(1), numnormalize(1), numgrep(1), numsum(1), numrandom(1), numrange(1), numround(1)

# BUGS¶

There is currently no way to take the number found in the text stream and use it as the numerator instead of the denominator of a division operation. Workaround: https://bugs.debian.org/553913

# COPYRIGHT¶

numprocess 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.

# MORE INFO¶

More info on numprocess can be found at:

2020-06-09 | perl v5.30.3 |