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Shell Programming and Scripting
Sum value from selected lines script (awk,perl)
Post 302360791 by paolfili on Saturday 10th of October 2009 10:45:28 AM
10-10-2009
I know little awk and some elements of perl.
awk '{if ($1/500 > last_time_frame) { sum = $2 } else { sum+=$2;print sum };last_time_frame=$1/500;print sum}' AAAA.txt
No way
awk '{if ($1/500 > last_time_frame) { sum = $2 } else { sum+=$2;print sum };last_time_frame=$1/500;print sum}' AAAA.txt
No way
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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)