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Top Forums Shell Programming and Scripting Comparing Columns and printing the difference from a particular file Post 302386472 by buzzusa on Tuesday 12th of January 2010 01:36:00 PM
Old 01-12-2010
Comparing Columns and printing the difference from a particular file

Gurus,

I have one file which is having multiple columns and also this file is not always contain the exact columns; sometimes it contains 5 columns or 12 columns. Now, I need to find the difference from that particular file. Here is the sample file:
Code:
param1 | 10 | 20 | 30 |
param2 | 10 | 10 | 10 |
param3 | AB | AB | BC|
param4 | AB | BC | AB |
param5 | AA | AA | AA|

Now, the output print the difference only:
Code:
param1 | 10 | 20 | 30 |
param3 | AB | AB | BC |
param4 | AB | BC | AB |

I tried doing this in awk; but because the number of file columns are not same everytime. so, please help me on this either with awk, perl or any unix solution.

Thanks

Last edited by Scott; 01-12-2010 at 04:36 PM.. Reason: Please use code tags
 

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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
(printf "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
June 6, 1993 BSD
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