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Full Discussion: Compare two files word by word
Top Forums Shell Programming and Scripting Compare two files word by word Post 302676183 by drl on Tuesday 24th of July 2012 07:43:51 AM
Old 07-24-2012
Hi.

A stylized display of word-by-word differences can be seen with wdiff:
Code:
#!/usr/bin/env bash

# @(#) s1	Demonstrate word-by-word differences.

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C wdiff

FILES="data*"
pl " Input files data*:"
head $FILES

pl " Word-by-word differences:"
wdiff $FILES

pl " Word-by-word differences, avoid spanning newlines:"
wdiff -n $FILES

exit 0

producing
Code:
% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
wdiff GNU wdiff 0.5

-----
 Input files data*:
==> data1 <==
aaa bbb ccc
dddd efg hij

==> data2 <==
aaa bcd edgf
xxx yyy kkh

-----
 Word-by-word differences:
aaa [-bbb ccc
dddd efg hij-] {+bcd edgf
xxx yyy kkh+}

-----
 Word-by-word differences, avoid spanning newlines:
aaa [-bbb ccc-]
[-dddd efg hij-] {+bcd edgf+}
{+xxx yyy kkh+}

See man wdiff for details. The utility colordiff might be of use if displaying on a terminal.

Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
rsmohankumar
 

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LEARN ABOUT DEBIAN

docdiff

DOCDIFF(1)						      General Commands Manual							DOCDIFF(1)

NAME

       docdiff -- character/word-oriented diff

SYNOPSIS

       docdiff [options]  file1 file2

DESCRIPTION

       This manual page documents briefly the docdiff	    commands.

       This  manual  page was written for the Debian distribution because the original program does not have a manual page.  Instead, it has docu-
       mentation in the HTML format; see below.

       docdiff is a program that compares two files and shows the difference.  It can compare files word by word, char by char, or line  by  line.
       It has several output formats such as HTML/XHTML, tty, Manued, or user-defined markup.

       It supports several encodings and end-of-line characters, including ASCII, UTF-8, EUC-JP, Shift_JIS, CR, LF, and CRLF.

OPTIONS

       --resolution=RESOLUTION
		 specify resolution (granularity) line|word|char (default is word)

       --line	 set resolution to line

       --word	 set resolution to word

       --char	 set resolution to char

       --encoding=ENCODING
		 specify character encoding ASCII|EUC-JP|Shift_JIS|UTF-8|auto (default is auto)

       --ascii	 same as --encoding=ASCII

       --eucjp	 same as --encoding=EUC-JP

       --sjis	 same as --encoding=Shift_JIS

       --utf8	 same as --encoding=UTF-8

       --eol=EOL specify end-of-line character CR|LF|CRLF|auto (default is auto)

       --cr	 same as --eol=CR

       --lf	 same as --eol=LF

       --crlf	 same as --eol=CRLF

       --format=FORMAT
		 specify output format tty|manued|html|wdiff|user (default is html; user tags have to be described in config file)

       --tty	 same as --format=tty

       --manued  same as --format=manued

       --html	 same as --format=html

       --wdiff	 same as --format=wdiff

       --digest  digest output, do not show all

       --cache	 use file cache

       --no-config-file
		 do not read config files

       --verbose run verbosely

       --help	 show usage

       --version show version

       --license show license

       --author  show author(s)

SEE ALSO

       /usr/share/doc/docdiff/readme.html.

AUTHOR

       This manual page was written by akira yamada akira@debian.org for the Debian system (but may be used by others).

																	DOCDIFF(1)
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