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Top Forums Shell Programming and Scripting Using awk to isolate specific rows Post 302562505 by radoulov on Friday 7th of October 2011 06:13:44 AM
Old 10-07-2011
OK,
I edited my post and modified the script in order to handle multiple entries (you should remove the previously created before rerunning the script though).

This version will be more efficient, but some awk implementations may hit the high number of concurrently open files limit with it:
Code:
awk '{ 
  /^PY/ && y = $2
  r = r ? r RS $0 : $0 
  }
/^ER/ {
  print r > y
  r = x
  }' infile


Last edited by radoulov; 10-07-2011 at 07:19 AM..
This User Gave Thanks to radoulov For This Post:
 

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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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