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Top Forums Shell Programming and Scripting Computing dataset for a specific record Post 302333963 by kshji on Tuesday 14th of July 2009 11:24:06 AM
Old 07-14-2009
This ex. give tools to create dynamic tool for your needs.
Code:
# search only some lines
awk -v searchfld=3  -v searchvalue="Fre" -v minfld=5  -v keyfld=4 '
   BEGIN {
             minvalue=9999999999999999
         }
   ( $minfld < minvalue ) && ( $searchfld == searchvalue ) {
                        minkey=$keyfld
                        minvalue=$minfld
                      }
END {
        print "minkey:",minkey," minvalue:",minvalue
    } '  inputfile

And solution for your needs:
Code:
awk -v keyfld=3  -v minfld=5  '
   BEGIN {
             minvalue=9999999999999999
         }
   Min[$keyfld]<1 { Min[$keyfld]=minvalue  }
   $minfld < Min[$keyfld]  {
                      lines[$keyfld]=$0
                      Min[$keyfld]=$minfld
                      }
END {
        for (id in lines) {
                print lines[id]
                }
    } ' inputfile

 

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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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