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Top Forums Shell Programming and Scripting Reformatting Column into rows Post 302746107 by Don Cragun on Tuesday 18th of December 2012 07:01:35 PM
Old 12-18-2012
If you were looking for something that self adjusts based on the column headings and data to be displayed, you could try something like:
Code:
awk -F" : " '
# c[heading] = # of values accumulted for heading
# h[heading] = heading_field
# hc = # of headings
# ho[heading_field] = heading
# r = # of rows to be printed (not counting headings)
# v[heading,c[heading]] = value to be printed in row c[heading] under heading
# w[heading_field] = widest field data for heading_field
{       v[$1,++c[$1]] = $2
        if(!($1 in h)) {
                ho[++hc] = $1
                h[$1] = hc
                w[hc] = length($1)
        }
        if(w[h[$1]] < length($2)) w[h[$1]] = length($2)
        if(c[$1] > r) r = c[$1]$1, c[$1], $1, h[$1], hc, ho[hc], r, $1, $1, c[$1], v[$1,c[$1]], h[$1], w[h[$1]])}
END {   for(i = 1; i < hc; i++)
                printf("%-*.*s", w[i] + 3, w[i] + 3, ho[i])
        printf("%-s\n", ho[hc]);
        for(j = 1; j <= r; j++) {
                for(i = 1; i < hc; i++)
                        printf("%-*.*s", w[i] + 3, w[i] + 3, v[ho[i], j]);
                printf("%-s\n", v[ho[hc], j]);
        }
}' file

With the sample input file given in the 1st message in this thread, it produces the output:
Code:
xxx       11            xyz
yyy zzz   111 222 xxx   abc def
aaa bbb   555 333 yy    abc xyz

 

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comm(1) 						      General Commands Manual							   comm(1)

NAME
comm - select or reject lines common to two sorted files SYNOPSIS
file1 file2 DESCRIPTION
comm reads file1 and file2, which should be ordered in increasing collating sequence (see sort(1) and Environment Variables below), and produces a three-column output: Column 1: Lines that appear only in file1, Column 2: Lines that appear only in file2, Column 3: Lines that appear in both files. If is used for file1 or file2, the standard input is used. Options 1, 2, or 3 suppress printing of the corresponding column. Thus prints only the lines common to the two files; prints only lines in the first file but not in the second; does nothing useful. EXTERNAL INFLUENCES
Environment Variables determines the collating sequence expects from the input files. determines the language in which messages are displayed. If is not specified in the environment or is set to the empty string, the value of determines the language in which messages are displayed. If is not specified in the environment or is set to the empty string, the value of is used as a default. If is not specified or is set to the empty string, a default of ``C'' (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to ``C''. See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. EXAMPLES
The following examples assume that and have been ordered in the collating sequence defined by the or environment variable. Print all lines common to and (in other words, print column 3): Print all lines that appear in but not in (in other words, print column 1): Print all lines that appear in but not in (in other words, print column 2): SEE ALSO
cmp(1), diff(1), sdiff(1), sort(1), uniq(1). STANDARDS CONFORMANCE
comm(1)
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