Compare Two Files Using 'git diff'

    
Note: Our current directory is not in a Git repository.

We have two files "file_1.txt" and "file_2.txt".

"file_1.txt" has content:

Hermione is a good girl.
Hermione is a bad girl.
Hermione is a very good girl.

"file_2.txt" has content:

Hermione is a good girl.
No, Hermione is not a bad girl.
Hermione is a very good girl.

The color coding below is as it appears in Windows CMD prompt:

C:\Users\Ashish Jain\OneDrive\Desktop>git diff --no-index file_1.txt file_2.txt
diff --git a/file_1.txt b/file_2.txt
index fc04cd5..52bdfd9 100644
--- a/file_1.txt
+++ b/file_2.txt,
@@ -1,3 +1,3 @@
 Hermione is a good girl.
-Hermione is a bad girl.
+No, Hermione is not a bad girl.
 Hermione is a very good girl.
\ No newline at end of file

C:\Users\Ashish Jain\OneDrive\Desktop>git diff --no-index file_2.txt file_1.txt
diff --git a/file_2.txt b/file_1.txt
index 52bdfd9..fc04cd5 100644
--- a/file_2.txt
+++ b/file_1.txt
@@ -1,3 +1,3 @@
 Hermione is a good girl.
-No, Hermione is not a bad girl.
+Hermione is a bad girl.
 Hermione is a very good girl.
\ No newline at end of file

The output of the "git diff" is with respect to the first file.

Output of "git diff file_1.txt file_2.txt" is read as: "What changed in file_1 as we move from file_1 to file_2".