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Top Forums Shell Programming and Scripting File Size calculation with AWK Post 302350625 by jim mcnamara on Friday 4th of September 2009 11:04:38 AM
Old 09-04-2009
I cannot tell what is going on BUT - awk uses double precision arithmetic. It supports number up to 10^308 on your system:
Code:
> file `which awk`
/usr/xpg4/bin/awk:      ELF 32-bit MSB executable SPARC Version 1, dynamically linked, stripped
> echo "12345678910 12345678910" | awk '{sum=$1; sum+=$2; print sum}'
24691357820
> echo "12345678910 12345678910" | nawk '{sum=$1; sum+=$2; print sum}'
24691357820

 

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SUM(1)								   User Commands							    SUM(1)

NAME
sum - checksum and count the blocks in a file SYNOPSIS
sum [OPTION]... [FILE]... DESCRIPTION
Print checksum and block counts for each FILE. -r use BSD sum algorithm, use 1K blocks -s, --sysv use System V sum algorithm, use 512 bytes blocks --help display this help and exit --version output version information and exit With no FILE, or when FILE is -, read standard input. AUTHOR
Written by Kayvan Aghaiepour and David MacKenzie. REPORTING BUGS
Report sum bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for sum is maintained as a Texinfo manual. If the info and sum programs are properly installed at your site, the command info coreutils 'sum invocation' should give you access to the complete manual. GNU coreutils 7.1 July 2010 SUM(1)
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