A short tech tip on how to compare files and folders using diff and merge software such as Meld. The basic Meld usage and features.
Sometimes, you want to compare files in two directories find the difference.
For example, when you update software on your site, would be good to know which files updated and how the changes may affect your installation. Or maybe you've (or your developer) changed some files on your site and forget where the changes were made.
Obviously, you won't check each file line by line. You certainly need a tool, which can find all differences and give you visual report.
One of such tools is the Meld. It's free, open source and available for Linux, Windows and OS X users.
Meld helps you compare files and directories in two- and even three-way overview. You also can manage files under version control, such as Git or Subversion.Example
Example below shows how looks comparison of the ClassiPress versions …