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Full Discussion: Sum up formatted numbers with comma separation
Top Forums Shell Programming and Scripting Sum up formatted numbers with comma separation Post 303035520 by MadeInGermany on Monday 27th of May 2019 04:51:21 AM
Old 05-27-2019
Supposed you only show $5 it is
Code:
awk '{gsub(",", "", $5); sum+=$5} END{print sum}' mylogfile.log

The gsub() returns the number of performed substitutions, not the result string. The result is stored in the input variable, here $5.

Because modification of an input field like $5 causes a reformatting of $0, it sometimes makes sense to have an extra variable.
A demonstration:
Code:
awk '{x=$5; gsub(",", "", x); sum+=x; print} END{print sum}'

Compare with
Code:
awk '{gsub(",", "", $5); sum+=$5; print} END{print sum}'

These 2 Users Gave Thanks to MadeInGermany For This Post:
Don Cragun krishmaths
 

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LEARN ABOUT REDHAT

sum

sum(n)									sum								    sum(n)

NAME

       sum - calculate a sum(1) compatible checksum

SYNOPSIS

       package require Tcl 8.2

       package require sum ?1.0?

       ::crc::sum ?-format format? message

       ::crc::sum ?-format format? -filename file

DESCRIPTION

       This  package  provides	a Tcl-only implementation of the sum(1) command which calculates a 16 bit checksum value from the input data.  The
       BSD sum algorithm is used by default but the SysV algorithm is also available.

COMMANDS

       ::crc::sum ?-format format? message

       ::crc::sum ?-format format? -filename file
	      The command takes string data or a file name and returns a checksum value calculated using the sum(1) algorithm. The result is  for-
	      matted using the format(n) specifier provided or as an unsigned integer (%u) by default.

OPTIONS

       -filename name
	      Return a checksum for the file contents instead of for parameter data.

       -format string
	      Return the checksum using an alternative format template.

EXAMPLES

       % crc::sum "Hello, World!"
       37287

       % crc::sum -format 0x%X "Hello, World!"
       0x91A7

       % crc::sum -file sum.tcl
       13392

SEE ALSO

       sum(1), cksum(n), crc32(n)

AUTHORS

       Pat Thoyts

KEYWORDS

       sum, cksum, checksum, crc, crc32, cyclic redundancy check, data integrity, security

crc									1.0								    sum(n)
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