👉 Any program which compares two files or sets of files and outputs a description of the differences between them.
Alright class, settle down, let’s take a look! You've stumbled upon a word that’s quite neat, “Diff” – it’s a tool, oh so sweet! The dictionary gives you the gist, you see, "Comparing files, for you and me!" Let’s break it down with a little rhyme, It's all about finding differences in time. Think of two documents, side by side they lie, “Diff” scans them closely, way up high! It hunts for changes, small or grand, Adding lines, or taking them from the land. It shows you precisely what’s been changed, Like a detective, expertly arranged. It outputs a description, clear and bright, Of how those files differ in sight! So "diff" means to compare with care, And highlight changes beyond compare. Do you understand now, my dears? Any questions for me?