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Top Forums UNIX for Beginners Questions & Answers How to search for a word in column header that fully matches the word not partially in awk? Post 303037419 by Atta on Thursday 1st of August 2019 04:00:37 AM
Old 08-01-2019
How to search for a word in column header that fully matches the word not partially in awk?

I have a multicolumn text file with header in the first row like this

Quote:
Name xy_fill zxy_fill tz_fill
Fox 0 5 55
Snake 1 6 14
wolf 8 1 2
The headers are stored in an array called
Quote:
hdr
. which contains
Quote:
xy_fill tz_fill
I want to search for each elements of this
Quote:
hdr
array from that multicolumn text file. And I am using this awk approach

Code:
for ii in ${hdr[@]}
do

gawk -vcol="$ii" -F $'\t' ' 
$0 ~ col{
for(s=1;s<=NF;s++){ 
heading=$s 
colhdr[s]=heading
if(index(heading, col))wanted[s]=1
}
}
'

done

But this gives me both
Quote:
xy_fill
and
Quote:
zxy_fill
columns while searching for
Quote:
xy_fill
. How can I only read
Quote:
xy_fill
column?
For example if I search
Quote:
xy_fill
it should return column number 1 but my script is returning 1 and 2, which is wrong.

Last edited by Atta; 08-01-2019 at 05:07 AM..
 

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ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME
ppmtopgm - convert a portable pixmap into a portable graymap SYNOPSIS
ppmtopgm [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b. Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original colors, not necessarily a way that looks like a black and white photograph. QUOTE
Cold-hearted orb that rules the night Removes the colors from our sight Red is gray, and yellow white But we decide which is right And which is a quantization error. SEE ALSO
pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 10 April 2000 ppmtopgm(1)
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