Convert a script in awk script Post: 74411

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Top Forums Shell Programming and Scripting Convert a script in awk script Post 74411 by criglerj on Thursday 9th of June 2005 01:19:57 PM

06-09-2005

Registered User

vgersh99's solution is good, but it might be possible to refine it a bit. Assuming a nawk/gawk (likewise untested):

Code:

k = match($0,/0x000000(01|0B|45|58|64|66)/) {
    arr[substr($0, k + 8, 2)]++
}

END {
    for (i in arr)
        print "Errores", "0x" i, arr[i]
}

What are the differences?

Direct match against all the patterns you seek at one time, i.e., no iteration over codesA on every line
No lookup in codesAs for each item found

[Old awk solution deleted --- no alternation ("|") available.]

The disadvantage here is that nawk and awk don't "capture" the thing matched, so you still do the substr call on every match (though it's in machine language and therefore fast). (I don't use gawk, but it may have a remedy for this.)

A ruby solution would work like this (and the perl solution would be similar):

Code:

$hsh = { "01" => 0, "0B" => 0, "45" => 0, "58" => 0, "64" => 0, "66" => 0 }
ARGF.each do |line|
    next unless m = %r/0x000000(01|0B|45|58|64|66)/.match line
    $hsh[m[1]] += 1
end
$hsh.keys.sort do |k|
    print "Errores 0x", k, " ", $hsh[k]
end

Last edited by criglerj; 06-09-2005 at 02:36 PM.. Reason: Old awk solution doesn't work

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LEARN ABOUT OPENSOLARIS

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWgawk	      |
       +--------------------+-----------------+
       |Interface Stability | Volatile	      |
       +--------------------+-----------------+
NOTES

       Source for gawk is available on http://opensolaris.org.

Free Software Foundation					    Nov 3 1999								  IGAWK(1)

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