git diff

git diff show changes between

• the working tree and the index
• the working tree and a tree
• the index and a tree
• a tree and another tree
• a blob object and another blob object
• a (regular) file and another (regular) file

Show differences between two commits:

git diff 2a532db 5949ddb

Use --cached to compare staging area with repository. --staged is a synonym for --cached. Without --cached (or --staged), git diff compares working tree to repository:

git diff --cached

The following command shows the differences of a given file between its current local HEAD and the modified (uncommitted) changes to this file:

git diff HEAD path/to/file.txt

The diff between the original repository and the local HEAD(?):

git diff  master  origin/master