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Full Discussion: Subtracting values from 2 columns in a file
Top Forums UNIX for Dummies Questions & Answers Subtracting values from 2 columns in a file Post 302567482 by Skrynesaver on Monday 24th of October 2011 10:10:30 AM
Old 10-24-2011
The following script only prints the instance of any duplicate with the highest value of the new final field.
Code:
perl -e 'while(<>){
   chomp;
   @fields=split(/ /,$_);
   if (($fields[4] - $fields[3]) > $genes{$fields[0]}->[5]){
      $genes{$fields[0]}=[@fields[0..4],$fields[4] - $fields[3]];
   }
}
for (sort keys %genes){
   print join (" ", @{$genes{$_}}),"\n";
}' tmp.dat

This User Gave Thanks to Skrynesaver For This Post:
wolf_blue
 

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LEARN ABOUT REDHAT

column

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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