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Top Forums Shell Programming and Scripting Help with parsing data with awk , eliminating unwanted data Post 302751943 by Scrutinizer on Saturday 5th of January 2013 02:43:21 AM
Old 01-05-2013
Hi reveri,

Setting RS to the empty string is a special condition where records are split if there are two consecutive newlines. There would not be a limit on the number of records.

There would be a limitation per record, if the record exceeds the maximum length, which would not happen very quickly, but in the awk version of HP-UX (that is what I think this it, right? ) sooner than on some other platforms..

--
{fp=$NF} belongs to the preceding condition-action pair.

fp{print v,ps,fp;fp="";}' means if fp is neither empty nor zero then process {print v,ps,fp;fp="";}

--
Here is another version without RS=
Code:
awk '/VG Name/{a=$NF} /PE Size/{b=$NF} /Free PE/{print a,b,$NF}' infile

or
Code:
awk '/VG Name|PE Size|Free PE/{printf "%s ", $NF} /Free PE/{print x}' infile


Last edited by Scrutinizer; 01-06-2013 at 03:18 AM..
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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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