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Full Discussion: Check the changes made to file in vi
Top Forums UNIX for Dummies Questions & Answers Check the changes made to file in vi Post 302456139 by bakunin on Thursday 23rd of September 2010 09:50:41 AM
Old 09-23-2010
kailash19, what scrutinizers and jiliagres suggestions have in common is this:

As vi opens a file it creates a backup copy somewhere. Depending on the specific flavour of vi or vim you use it might be in different locations: the vi under AIX creates this file in /var/tmp, vim uses .<filename>.swp in the same directory as the file, etc.. Real vi's delete this backup copy upon leaving the editor, but some vi-clones (like vim) retain these files until explicitly configured to do otherwise.

By using the "diff" utility you can compare the text you have right now in your editing buffer (the file in the open editing session) and the contents of this backup copy of the original file and find out the differences. You can even write these differences to a file and open this in another editor window as vi is multi-windowed (see the ":e", ":n" and ":rew" commands in the man pages).

I hope this helps.

bakunin
 

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LEARN ABOUT REDHAT

vimdiff

VIMDIFF(1)						      General Commands Manual							VIMDIFF(1)

NAME

       vimdiff - edit two or three versions of a file with Vim and show differences

SYNOPSIS

       vimdiff [options] file1 file2 [file3]

       gvimdiff

DESCRIPTION

       Vimdiff	starts Vim on two (or three) files.  Each file gets its own window.  The differences between the files are highlighted.  This is a
       nice way to inspect changes and to move changes from one version to another version of the same file.

       See vim(1) for details about Vim itself.

       When started as gvimdiff the GUI will be started, if available.

       In each window the 'diff' option will be set, which causes the differences to be highlighted.
       The 'wrap' and 'scrollbind' options are set to make the text look good.
       The 'foldmethod' option is set to "diff", which puts ranges of lines without changes in a fold.	'foldcolumn' is set to two to make it easy
       to spot the folds and open or close them.

OPTIONS

       Vertical splits are used to align the lines, as if the "-O" argument was used.  To use horizontal splits intead, use the "-o" argument.

       For all other arguments see vim(1).

SEE ALSO

       vim(1)

AUTHOR

       Most of Vim was made by Bram Moolenaar, with a lot of help from others.	See ":help credits" in Vim.

								   2001 March 30							VIMDIFF(1)
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