What are git diff options?

The git diff command has several options that allow you to customize its behavior and output. Here are some commonly used options:

Compare Working Directory with Staging Area:
```
git diff
```
Shows changes in the working directory that are not staged for the next commit.
Compare Staged Changes with Last Commit:
```
git diff --cached
```
Shows changes that are staged for the next commit compared to the last commit.
Compare Two Commits:
```
git diff commit1 commit2
```
Compares the differences between two specific commits.
Compare a Specific File:
```
git diff HEAD -- path/to/file
```
Shows changes in a specific file compared to the last commit.
Ignore Whitespace Changes:
```
git diff -w
```
Ignores whitespace changes when comparing files.
Show Differences in a Side-by-Side Format:
```
git diff -y
```
Displays the differences in a side-by-side format (note: this option may require additional tools).
Show Only Names of Changed Files:
```
git diff --name-only
```
Lists only the names of files that have changed.
Show Summary of Changes:
```
git diff --stat
```
Provides a summary of changes, including the number of lines added and removed.
Compare with a Specific Branch:
```
git diff branch_name
```
Compares the current branch with the specified branch.
Show Changes in a Specific Directory:
```
git diff path/to/directory/
```
Shows changes in a specific directory.

These options can be combined to tailor the output of git diff to your specific needs. For example:

git diff --cached --name-only

This command will show the names of files that are staged for the next commit.