Highlight 'comm' command output Post: 303002017

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Top Forums Shell Programming and Scripting Highlight 'comm' command output Post 303002017 by muppets on Wednesday 16th of August 2017 07:45:29 AM

08-16-2017

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Highlight 'comm' command output

Given the output below (simplified) extracted from the comparison of two curl -I commands saved in two different files, I am looking for the best approach to highlight the following scenarios in a script:

this header exists only in file1.txt but this one does not
this one exists in both cases but the values are different

I was thinking about assigning green color to column 3, orange color if the header is found both in column 1 and column 2 and no color if the header is found only either in column 1 or column 2...
I am also open to suggestions different from colors and by processing file1.txt and file2.txt with other options than comm command.

Code:

root# comm <(sort file1.txt | tr '.' ',') <(sort file2.txt | tr '.' ',')

Accept-Ranges: none
Cache-Control: private, max-age=0
    Cache-Control: public, max-age=14400
    CF-Cache-Status: HIT
        HTTP/1,1 200 OK

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kinosearch1::highlight::simplehtmlformatter

KinoSearch1::Highlight::SimpleHTMLFormatter(3pm)	User Contributed Perl Documentation	  KinoSearch1::Highlight::SimpleHTMLFormatter(3pm)

NAME

       KinoSearch1::Highlight::SimpleHTMLFormatter - surround highlight bits with tags

SYNOPSIS

	   my $formatter = KinoSearch1::Highlight::SimpleHTMLFormatter->new(
	       pre_tag	=> '<i>',
	       post_tag => '</i>',
	   );

	   # returns "<i>foo</i>"
	   my $highlighted = $formatter->highlight("foo");

DESCRIPTION

       This subclass of KinoSearch1::Highlight::Formatter highlights text by surrounding it with HTML "strong" tags.

METHODS

   new
       Constructor.  Takes hash-style params.

	   my $formatter = KinoSearch1::Highlight::SimpleHTMLFormatter->new(
	       pre_tag =>  '*', # default: '<strong>'
	       post_tag => '*', # default: '</strong>'
	   );

       o   pre_tag - a string which will be inserted immediately prior to the highlightable text, typically to accentuate it.  If you don't want
	   highlighting, set both "pre_tag" and "post_tag" to ''.

       o   post_tag - a string which will be inserted immediately after the highlightable text.

COPYRIGHT

       Copyright 2006-2010 Marvin Humphrey

LICENSE, DISCLAIMER, BUGS, etc.
       See KinoSearch1 version 1.00.

perl v5.14.2							    2011-11-15			  KinoSearch1::Highlight::SimpleHTMLFormatter(3pm)