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

The Linux comm command makes it easy to compare a couple text files and determine if they both contain the same lines -- whether the file contents are sorted or not.

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.

Quick little question. I have five files (plus or minus a few) and I need to do a diff between them. It would be nice to know what was different (each is a simple, already "sort -u" list) but a ...