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Top Forums Shell Programming and Scripting Script to compare 2 files and prints difference as output sidebyside Post 302755315 by Yoda on Saturday 12th of January 2013 01:55:14 PM
Old 01-12-2013
Using diff command is the best option here. But if you want an o/p as per your requirement, then here is another approach:
Code:
c=0
paste -d"@" OLD_FILE NEW_FILE | while IFS=@ read o_line n_line
do
        c=$(( c + 1 ))
        if [ "$o_line" != "$n_line" ]
        then
                echo "Line $c is different:"
                echo "OLD_FILE: $o_line NEW_FILE: $n_line\n"
        fi
done


Last edited by Yoda; 01-12-2013 at 04:11 PM.. Reason: Changed the field separator
 

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ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
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