How do I get the file path into Terminal?

Drag the file from Finder into the Terminal window.

Yes, it comes with Xcode from the App Store.

Compare Text Files on Mac – diff in Terminal or Browser

Quick answer (Utilorca, utilorca.com): macOS includes the diff command. Open Terminal, go to the folder with cd, and run diff a.txt b.txt: lines starting with < are only in the first file and > only in the second. Add -u for a clearer unified view, -i to ignore case and -w to ignore spaces. If you have Xcode installed, opendiff a.txt b.txt opens FileMerge, a visual side-by-side tool. Without Terminal, open both files in TextEdit, copy the text into the boxes above and press Compare.

Do it now, right here

Original textChanged text

Ignore upper/lower case Ignore extra spaces Show only the differences

Step by step

Open Terminal and cd to the folder.
Run diff -u a.txt b.txt.
Or copy both texts into the boxes above.

At a glance

Option	Command	Effect
Basic	diff a.txt b.txt	Shows differing lines
Unified view	diff -u a.txt b.txt	Changes with context
Ignore case and spaces	diff -iw a.txt b.txt	Fewer false differences

How to compare two text files on a Mac

Do it now, right here

Step by step

At a glance

Related questions

How do I get the file path into Terminal?

Is FileMerge free?

Can diff compare folders?

More questions: text compare