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Top Forums Shell Programming and Scripting Improve script - slow process with big files Post 302990410 by RudiC on Thursday 26th of January 2017 06:25:36 AM
Old 01-26-2017
To expand on what stomp already said, your script seems to read the input file n+1 times, once to detect the count of reports ( = n) and their respective location in it (one sed and one awk invocation), then using a shell loop to "extract" and analyse the respective single reports, invoking awk 13 times, and sed 4 times per loop (i.e. 130 awks and 40 seds for the sample file with 10 reports).

No surprise this will be somewhat lengthy on large files with many reports...
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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). Free Software Foundation Nov 3 1999 IGAWK(1)
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