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Full Discussion: compare two files using awk
Top Forums Shell Programming and Scripting compare two files using awk Post 302367455 by TonyLawrence on Monday 2nd of November 2009 04:56:16 PM
Old 11-02-2009
I realize you asked about awk, but Unix "join" is also a good way to sart something like this.

For this case,

Code:
 join -1 1 a b

gives output like

Quote:
8351 00000000000636 2009044 -00001.000 00000000000636 006
8351 00000000000636 2009044 -00001.000 00000000000637 002
8351 00000000000636 2009044 -00001.000 00000000000642 001
8351 00000000000637 2009044 -00002.000 00000000000636 006
8351 00000000000637 2009044 -00002.000 00000000000637 002
8351 00000000000637 2009044 -00002.000 00000000000642 001
...
 

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Perl::Critic::Policy::ValuesAndExpressions::RequireNumbeUseraContributed PerPerl::Critic::Policy::ValuesAndExpressions::RequireNumberSeparators(3)

NAME
Perl::Critic::Policy::ValuesAndExpressions::RequireNumberSeparators - Write " 141_234_397.0145 " instead of " 141234397.0145 ". AFFILIATION
This Policy is part of the core Perl::Critic distribution. DESCRIPTION
Long numbers can be difficult to read. To improve legibility, Perl allows numbers to be split into groups of digits separated by underscores. This policy requires number sequences of more than three digits to be separated. $long_int = 123456789; #not ok $long_int = 123_456_789; #ok $long_float = 12345678.001; #not ok $long_float = 12_345_678.001; #ok CONFIGURATION
The minimum absolute value of numbers that must contain separators can be configured via the "min_value" option. The default is 10,000; thus, all numbers >= 10,000 and <= -10,000 must have separators. For example: [ValuesAndExpressions::RequireNumberSeparators] min_value = 100000 # That's one-hundred-thousand! NOTES
As it is currently written, this policy only works properly with decimal (base 10) numbers. And it is obviously biased toward Western notation. I'll try and address those issues in the future. AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com> COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license can be found in the LICENSE file included with this module. perl v5.16.3 2014-06-Perl::Critic::Policy::ValuesAndExpressions::RequireNumberSeparators(3)
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