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Top Forums Shell Programming and Scripting help sum columns by break in first column with awk or sed or something. Post 302282621 by syadnom on Sunday 1st of February 2009 03:39:23 AM
Old 02-01-2009
if that wont work.......?

If awk cant do this directly, does it make and sense to first take the part number which is the first 15 characters and dump it to a temp file, then run uniq on it. afterwards do something like:

#filter_sum.awk
/PARTNUM/ { sum+=$2}
END { print sum }
except instead of /PARTNUM/ so some sort of
for x in `cat sum.awk.tempfile`;do gawk '{ /$x/ { sum+=$2} END { print sum }'

i havent gotten it to work yet but need some opinions on whether this is the right way..
 

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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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