If you ever need to combine two identically-named folders together, but they contain a mix of old, new, and duplicate files, it's likely you will want to be selective in how they are merged ...

Regdiff is a free software that lets you easily compare, merge and sort registry files. You can directly compare reg files with each other or with the local registry values on your system.

How to Add a File Using CMD Line. One of the useful features of the Windows Command Prompt (also known as CMD, CMD line or Command line) is creating, or adding, a text file to the current directory.

You can combine multiple PDF files into a single, easy-to-share document using simple software on your Mac computer or Windows PC. Here's how.