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Full Discussion: Script to delete few rows from a file and then update header
Special Forums UNIX and Linux Applications Script to delete few rows from a file and then update header Post 302771156 by mirwasim on Tuesday 19th of February 2013 11:36:55 PM
Old 02-20-2013
Quote:
Originally Posted by bipinajith
Try this modified code. Make necessary adjustments as per your requirement:
Code:
awk ' NR == 1 {
                HF = substr($0,1,15);
                HC = substr($0,16,6);
                HR = substr($0,22,14);
                HE = substr($0,36);
} /COOLTV/ {
                R  = $3;
                sub(/0+$/,x,R);
                HC -= 2;
                HR -= R;
                getline; next;
} !/COOLTV/ {
                print $0 > "newfile";
} END {
                printf "%s%06d%014d%d", HF, HC, HR, HE > "header";
} ' file

HDR=$( cat header )

awk -v H="$HDR" 'NR==1{ sub($0,H) }1' newfile

Hello Bipinajith
The Header file which gets created is not replacing header in newfile

when I tried separately i saw it printed value but when I did cat of file it was not appearing there
Code:
[wasim]$ HDR=$( cat header )
[wasim]$ echo $HDR
HJKL1Name00014200011800000463190664201
[wasim]$ nawk -v H="$HDR" 'NR==1{ sub($0,H) }1' check.txt
HJKL1Name00014200011800000463190664201
[wasim]$ cat check.txt
HJKL1Name00014200012000000600424618201

Last edited by mirwasim; 02-20-2013 at 01:29 AM..
 

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LEARN ABOUT DEBIAN

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.
	      Please notice this option isn't related to the terminal length as in a "80 culums terminal".

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do right to left (RTL) layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter and A4. Default is A4.

       Postscript points
	      Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch.

       --bottom-margin=bm
	      Set bottom margin. Default is 36 postscript points.

       --top-margin=tm
	      Set top margin. Default is 36 postscript points.

       --left-margin=lm
	      Set left margin. Default is 36 postscript points.

       --right-margin=rm
	      Set right margin. Default is 36 postscript points.

       --gutter-width=gw
	      Set gutter width. Default is 40 postscript points.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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