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Full Discussion: Extract columns from a file if the name dont exist put blank
Top Forums Shell Programming and Scripting Extract columns from a file if the name dont exist put blank Post 302459738 by durden_tyler on Tuesday 5th of October 2010 09:39:35 AM
Old 10-05-2010
Your script doesn't have to be so convoluted.

Code:
$
$
$ cat abc.txt
NAME1   NAME2   ADDRESS TEL
A       B       ADD     1234
$
$
$ awk 'BEGIN{IFS="\t"; OFS="\t"} NR==1{$1="ID" IFS $1; $3="EMAIL" IFS $3} NR>1{$1=IFS $1; $3=IFS $3}1' abc.txt
ID      NAME1   NAME2   EMAIL   ADDRESS TEL
       A       B               ADD     1234
$
$
$

To check that those are TAB characters and not blank spaces -

Code:
$
$ # -e option displays "$" at end of line; -t option displays TABs as ^I
$ cat -et abc.txt
NAME1^INAME2^IADDRESS^ITEL$
A^IB^IADD^I1234$
$
$
$ awk 'BEGIN{IFS="\t"; OFS="\t"} NR==1{$1="ID" IFS $1; $3="EMAIL" IFS $3} NR>1{$1=IFS $1; $3=IFS $3}1' abc.txt | cat -et
ID^INAME1^INAME2^IEMAIL^IADDRESS^ITEL$
^IA^IB^I^IADD^I1234$
$
$
$

tyler_durden
 

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LEARN ABOUT DEBIAN

actdiag

ACTDIAG(1)						      General Commands Manual							ACTDIAG(1)

NAME

       actdiag - generate activity-diagram image file from spec-text file.

SYNOPSIS

       actdiag [options] files

DESCRIPTION

       This manual page documents briefly the actdiag commands.

       actdiag is a program that generate activity-diagram image file from spec-text file.

OPTIONS

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

       -h, --help
	      show this help message and exit

       -a, --antialias
	      Pass diagram image to anti-alias filter

       -c FILE, --config=FILE
	      read configurations from FILE

       -o FILE
	      write diagram to FILE

       -f FONT, --font=FONT
	      use FONT to draw diagram

       -s, ----separate
	      Separate diagram images for each group (SVG only)

       -T TYPE
	      Output diagram as TYPE format

SEE ALSO

       The programs are documented fully by
       http://tk0miya.bitbucket.org/actdiag/build/html/index.html

AUTHOR

       actdiag was written by Takeshi Komiya <i.tkomiya@gmail.com>

       This manual page was written by Kouhei Maeda <mkouhei@palmtb.net>, for the Debian project (and may be used by others).

								   June  5, 2011							ACTDIAG(1)
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