The diff, comm, cmp, and colordiff commands are among the many ways to compare text files on a Linux system.

The standard diff output is meant to be terse. It captures the differences between two files in such a way as to make it possible to convert one file to the other if you only end up with one of ...

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.