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Full Discussion: gawk asort to sort record groups based on one subfield
Top Forums UNIX for Dummies Questions & Answers gawk asort to sort record groups based on one subfield Post 302711717 by lucasvs on Sunday 7th of October 2012 11:33:34 PM
Old 10-08-2012
Quote:
ou need to prepend each line in your array with primary and secondary sort fields, use asort() or asorti() to sort the modified records, and then strip off the added sort fields when you print (or otherwise process) the results.
So you mean I should
1st) sort by field1 and generate a first output
2nd) use this output to sort by subfield 2 and generate the final output.

I tried things like below but still doesn't work.
Code:
BEGIN{FS=OFS="/"}

{
# sort by field1
    array[$1] = $0

    asort(array)

# first output
    for (i in array)
        $0 = array[i]

# redefine fields in first output    
        split($0, rec, FS)
        rec[$2] = $0

        split($0, sub, " ")
        aut[++a] = sub[2]

# sort by subfield2 
        n = asort(aut)

# print final output
        for (j=1; j<=n; j++)
            print array[aut[j]]
    
}

 

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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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