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Let’s say you’ve edited a long HTML file and want find what’s changed against the original. If you were on the command line, you’d turn to ‘diff’, right? This is all fine and dandy, if not mundane and some what obfuscated as to what has changed.

However, if you wanted to view the entire files side by side, have the changes appear in context of the rest of the file and easily see where lines have been removed or add, you would use diff with the flags: ‘-yiEbwB’. Now that is a I can get used to.

Now if you had a massive file, say a WSDL (say “wizdull”) file from a certain CRM you use at work and you wanted to compare differences, diff to the rescue again. However because we’re seeing the entire file which is over 450K, the only way to parse through this is via ‘less’. If you couple this with increasing the width to 300 columns, it makes reviewing the changes a breeze. Further, you can search with in the diff by using the search features in less.

diff -yiEbwB --width=300 enterprise.wsdl enterprise2.wsdl |less