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Top Forums Shell Programming and Scripting Compare files to pull changed records only Post 302978591 by RudiC on Monday 1st of August 2016 02:50:21 PM
Old 08-01-2016
Slightly different approach:
Code:
awk '
                {gsub (/  */, " ")
                 IX = $1
                 sub ("^" $1, _)
                }

NR == FNR       {TMP[IX] = $0
                 next
                }

match ($0, TMP[IX])     {next
                        }

                {n = split (TMP[IX], CMP)
                 for (i=1; i<=n; i++) if ($i != CMP[i]) printf "%s ", $i
                 print "for key", IX, "is changed."
                 print IX, $0
                }


' file1 file2
UpdatedNewFirstName1 UpdatedNewLastname1 sampleemail@YAHOO.COM for key A123 is changed.
A123  Sim UpdatedNewFirstName1 UpdatedNewLastname1 123 JESSE DR. Atlanta GA32839 sampleemail@YAHOO.COM

This User Gave Thanks to RudiC For This Post:
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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