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


numprocess - This program mutates numbers as it encounters them.


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.)


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.


  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


   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.


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


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


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:


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 on numprocess can be found at:
2020-06-09 perl v5.30.3