show diff between commits
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## Understanding and Using `git diff` to Compare Commits: A Comprehensive Tutorial
`git diff` is a powerful command in Git that allows you to examine the changes between different states of your repository. It's a fundamental tool for understanding what modifications have been made, debugging code, and reviewing contributions. This tutorial will delve into the intricacies of `git diff`, exploring its various options, use cases, and output formats, with code examples to illustrate each concept.
**1. Basic Usage: Comparing the Working Directory with the Staging Area (Index)**
The simplest use case of `git diff` is to compare the changes in your working directory (the files you're currently editing) against the staging area (the index – files prepared for the next commit).
**Example:**
Let's say you have a file named `my_script.py` with the following content:
You modify the file to:
Running `git diff` will produce an output similar to:
**Understanding the `git diff` Output:**
* **`diff --git a/my_script.py b/my_script.py`**: This line indicates that the diff is comparing the `my_script.py` file (from `a/` – older version) with `my_script.py` (from `b/` – newer version).
* **`index 1234567..abcdef8 100644`**: This line shows the SHA-1 hashes of the blobs being compared and the file mode. The SHA-1 hashes are unique identifiers for each version of the file in the Git object database. The `100644` is the standard file mode for executable files.
* **`--- a/my_script.py`**: Indicates the version of the file represented by `a/` (the older version).
* **`+++ b/my_script.py`**: Indicates the version of the file represented by `b/` (the newer version).
* **`@@ -1,4 +1,5 @@`**: This is the "hunk header". It describes the location and size of the change.
* `-1,4`: Means starting from line 1, remove 4 lines (from the `a/` version).
* `+1,5`: Means starting from line 1, add 5 lines (to the `b/` version). The comma separates the starting line number fro ...
#Git
#VersionControl
#CodeDiff
Видео show diff between commits канала CodeHive
## Understanding and Using `git diff` to Compare Commits: A Comprehensive Tutorial
`git diff` is a powerful command in Git that allows you to examine the changes between different states of your repository. It's a fundamental tool for understanding what modifications have been made, debugging code, and reviewing contributions. This tutorial will delve into the intricacies of `git diff`, exploring its various options, use cases, and output formats, with code examples to illustrate each concept.
**1. Basic Usage: Comparing the Working Directory with the Staging Area (Index)**
The simplest use case of `git diff` is to compare the changes in your working directory (the files you're currently editing) against the staging area (the index – files prepared for the next commit).
**Example:**
Let's say you have a file named `my_script.py` with the following content:
You modify the file to:
Running `git diff` will produce an output similar to:
**Understanding the `git diff` Output:**
* **`diff --git a/my_script.py b/my_script.py`**: This line indicates that the diff is comparing the `my_script.py` file (from `a/` – older version) with `my_script.py` (from `b/` – newer version).
* **`index 1234567..abcdef8 100644`**: This line shows the SHA-1 hashes of the blobs being compared and the file mode. The SHA-1 hashes are unique identifiers for each version of the file in the Git object database. The `100644` is the standard file mode for executable files.
* **`--- a/my_script.py`**: Indicates the version of the file represented by `a/` (the older version).
* **`+++ b/my_script.py`**: Indicates the version of the file represented by `b/` (the newer version).
* **`@@ -1,4 +1,5 @@`**: This is the "hunk header". It describes the location and size of the change.
* `-1,4`: Means starting from line 1, remove 4 lines (from the `a/` version).
* `+1,5`: Means starting from line 1, add 5 lines (to the `b/` version). The comma separates the starting line number fro ...
#Git
#VersionControl
#CodeDiff
Видео show diff between commits канала CodeHive
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