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Full Discussion: Formatting columns in file
Top Forums Shell Programming and Scripting Formatting columns in file Post 302862297 by newbie2010 on Thursday 10th of October 2013 11:53:47 AM
Old 10-10-2013
Formatting columns in file
I have a script that creates a file with three column output. The columns look like this:

Code:
Policy Name Name Volume
VLS-EDWARDS-ARCHIVED_FILE-WINDOWS 10 12
XLZ-BASE-CYGWIN-ARCHIVED-FILE-LINUX 2 21
ZLX-GOLD-FILES-JAPANFILERS1-LINUX 20 27
ZLX-GOLD-FILES-JAPANFILERS2-LINUX13 29
ZLX-GOLD-FILES-JAPANFILERS3-LINUX 20 20
ZLX-GOLD-FILES-JAPANFILERS4-LINUX19 19

I have run the following command which puts them in order:

Code:
vols.txt |awk '{ printf "%-50s%-50s %s\n", $1, $2,$3 }'

However, then I tried to subtract column 3 from column2 and the format now is abysmal:


cat vols.txt |gawk 'NF > 1 { print $1 "\t" ($3 - $2) } END { printf "%-50s%-50s %s\n", $1, $2,$3 }'

Is the END statement wrong? The columns are now longer straight and in order; they have numbers zig zagging in and out such as:

Code:
[VLS-EDWARDS-ARCHIVED_FILE-WINDOWS 10                12  2
XLZ-BASE-CYGWIN-ARCHIVED-FILE-LINUX 2 21     19
ZLX-GOLD-FILES-JAPANFILERS1-LINUX 20            27   7

Anybody know how to perform the subtraction and format this in one line so it looks like a readable file?
 

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LEARN ABOUT FREEBSD

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD
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