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Full Discussion: Deleting specific columns
Top Forums Shell Programming and Scripting Deleting specific columns Post 302699121 by smitra on Tuesday 11th of September 2012 07:04:11 AM
Old 09-11-2012
Deleting specific columns

Hi group,
Can you please tell how to delete specific columns from a file.

I know something like
Code:
awk -F, '{ print $1" "$2" "15 }' input.txt > output.txt

will delete all other columns. But this is in a way to copy some particular columns.

But is there any other way to select just some columns to delete?
Thanks
Mitra
 

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COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME
column -- columnate lists SYNOPSIS
column [-tx] [-c columns] [-s sep] [file ...] DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file operands, or, by default, from the standard input. Empty lines are ignored. The options are as follows: -c Output is formatted for a display columns wide. -s Specify a set of characters to be used to delimit columns for the -t option. -t Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with the characters supplied using the -s option. Useful for pretty-printing displays. -x Fill columns before filling rows. column exits 0 on success, >0 if an error occurred. ENVIRONMENT
COLUMNS The environment variable COLUMNS is used to determine the size of the screen if no other information is available. EXAMPLES
(echo "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME"; ls -l | sed 1d) | column -t SEE ALSO
colrm(1), ls(1), paste(1), sort(1) HISTORY
The column command appeared in 4.3BSD-Reno. BSD
March 9, 2008 BSD
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