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Top Forums Shell Programming and Scripting Comparing files columnwise and print the differences in third file Post 302298288 by dariyoosh on Tuesday 17th of March 2009 07:20:51 AM
Old 03-17-2009
Hello there,

I think the following KornShell script will do the job. Note that this script works if and only if we suppose that in each file there are 4 lines and 3 columns. Otherwise a modification is needed in order to have it working for an arbitrary number of lines and columns.

Code:
#!/bin/ksh

INPUT_FILE1=$1
INPUT_FILE2=$2
OUTPUT_FILE=$3

exec 4< $INPUT_FILE1
exec 5< $INPUT_FILE2
exec 6> $OUTPUT_FILE

    
for LINE in 1 2 3 4
do
    read -u4 CURRENT_LINE_IN_FILE1
    read -u5 CURRENT_LINE_IN_FILE2
    
    for COLUMN in 1 2 3
    do
        TOKEN1=$(echo $CURRENT_LINE_IN_FILE1 | cut -d '|' -f $COLUMN)
        TOKEN2=$(echo $CURRENT_LINE_IN_FILE2 | cut -d '|' -f $COLUMN)
        
        if (( (($LINE == 1) && ($COLUMN == 3)) ||
              (($LINE == 2) && ($COLUMN == 2)) ||
              (($LINE == 4) && (($COLUMN == 2) || ($COLUMN == 3))) ))
        then
            if [[ $TOKEN1 != $TOKEN2 ]]
            then
                print -u6 "Mismatch found in (line , column) = "\
                "($LINE , $COLUMN), in file: $INPUT_FILE1 found "\
                "$TOKEN1 but in file: $INPUT_FILE2 found $TOKEN2"
            fi
        fi
    done
done

4<&-
5<&-
6<&-

Regards,
Smilie
 

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RNANO(1)						      General Commands Manual							  RNANO(1)

NAME
rnano - Restricted mode for Nano's ANOther editor, an enhanced free Pico clone SYNOPSIS
rnano [OPTIONS] [[+LINE,COLUMN] FILE]... DESCRIPTION
This manual page briefly documents the rnano command. nano is a small, free and friendly editor which aims to replace Pico, the default editor included in the non-free Pine package. Rather than just copying Pico's look and feel, nano also implements some missing (or disabled by default) features in Pico, such as "search and replace" and "go to line and column number". rnano is a restricted version of nano, which only edits specific files and doesn't allow the user access to the filesystem or a command shell. In restricted mode, nano will not: o read or write to any file not specified on the command line; o read any nanorc files; o allow suspending; o allow a file to be appended to, prepended to, or saved under a different name; o use backup files or spell checking. OPTIONS
+LINE,COLUMN Places cursor at line number LINE and column number COLUMN (at least one of which must be specified) on startup, instead of the default of line 1, column 1. -? Same as -h (--help). -h (--help) Show a summary of command line options and exit. -V (--version) Show the current version number and exit. See the nano(1) manpage for the complete documentation of nano. BUGS
Please send any comments or bug reports to nano@nano-editor.org. The nano mailing list is available from nano-devel@gnu.org. To subscribe, email to nano-devel-request@gnu.org with a subject of "subscribe". HOMEPAGE
http://www.nano-editor.org/ AUTHOR
Chris Allegretta <chrisa@asty.org>, et al (see AUTHORS for details). This manual page was originally written by Thijs Kinkhorst <thijs@kinkhorst.com>, for the Debian system (but may be used by others). August 23, 2007 version 2.0.0 RNANO(1)
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