numgrep - This program is the numeric equivilent of the grep utility.

        numgrep will round decimal numbers with more than 15 digits of accuracy.  This is
       mostly due to limit's in the way programming languages deal directly with numbers.

       numgrep 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.

numgrep searches for different occurrences of numbers through the use of numeric expressions.

numgrep uses a special numeric expression matching system.  Basically, it searches for ranges, factors
       and sequences of numbers.  Here is a list of the syntax characters and some sample expressions that will
       get you going:

           /<expression>/
                Put your expression or set of expressions between these
                two forward slashes.

           ..   Range expression.  A number must be used on the left
                and/or right of this expression to specify that numbers
                between, greater than or less than the numbers specified
                should be matched.

           ,    Expression separator.  The comma separates one complete
                expression from another in a set enclosed by //.

           m<n> Multiples of <n>.  This operator, followed by a number
                 <n> will match any number <x> that is an integer
                 multiple of <n>.  Meaning that <x> = <n> times <y>,
                 where <y> is any integer.

           f<n> Factors of <n>.  This operator, followed by a number <n>
                will match any number <x> that is an integer factor of
                <n>.  Meaning that <x> = <n> divided by <y>, where <y>
                is any integer.

            NOTE: Checking for factors and multiples is very fast because it
                is checked by doing a single modulus operation on two numbers.

       Examples:

           /2..10/  Match any number between 2 and 10.

           /2..10,20..30/  Match any number between 2 and 10 or between 20 and 30.

           /56,34,512,45,67/  Match any of the numbers 56, 34, 512, 45 or 67.

           /m3/  Match any integer that is a multiple of 3.

           /f1024/  Match any integer that is a factor of 1024.

           $ numrange -N /1..1000/ | numgrep /f1024/
           1
           2
           4
           8
           16
           32
           64
           128
           256
           512
           $

       More info on numgrep can be found at:

       http://suso.suso.org/xulu/Num-utils

perl v5.30.3                                       2020-06-09                                         NUMGREP(1)

       numgrep -  This program is the numeric equivilent of the grep utility.

           -l  Print the matching numbers out one per line
               instead of printing the entire line they are on.

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

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

numgrep [-dhlV] <FILE>

       | numgrep [-dhlV]   (Input on STDIN from pipeline.)

       numgrep [-dhlV]     (Input on STDIN.  Use Ctrl-D to stop.)