首先使用，

git log #to list all

Or

git log -p -1 #last one commit id

复制提交id。

现在我们使用两种方法列出特定提交的更改，

方法1：

git diff commit_id ^#提交id类似于1c6a6000asad012

方法2：

git show commit_id
For example: git show 1c6a600a

检查文件更改的更简单方法（示例）

# 1. Checkout a branch and see the list of commits
git log --oneline -5

# > Output
9b9b1f8 (HEAD -> master) Updated ABC
d58e5da chore: Added files
5a4aa2c chore: Added my pipeline
bb2b0b7 feat: Added ABC
473f711 feat: Added ZYX

# 2. Pick a commit hash and check which files were modified
git show --stat --oneline d58e5da

# > Output
d58e5da chore: Added versioning files
 Someabcfile                            | 18 ++++++++++++++++++
 myfolder/file.py                       | 19 +++++++++++++++++++
 myfolder/file.js                       |  7 +++++++
 myfolder/file.txt                      |  1 +
 4 files changed, 45 insertions(+)

# 3. Pick a file to check the differences
git show d58e5da myfolder12/file.py

或者，从列表中检查一次提交中的所有文件差异：

git show d58e5da

我喜欢下面的命令来比较特定的提交和上次提交：

git diff <commit-hash>^-

例子：

git diff cd1b3f485^-

Use:

git show <commit_sha>

这将向您展示该承诺中的内容。只需在两个提交SHA-1散列之间放置一个空格，就可以完成范围。

git show <beginning_sha> <ending_sha>

如果您经常重新设置基础，这非常有用，因为您的功能日志都是一行的。

如果您想查看最后3次提交，可以使用HEAD语法

git show HEAD~3 HEAD

一些答案漏掉了一个特例。如何查看根提交所做的更改，因为它没有父/祖先。

Both

git diff＜root_commit＞^<root_commit>

and

git diff＜root_commit＞~<root_commit>

抛出错误。

$git diff 27e521ca73a46b2d3a28568dc49fced81e46aaea~ 27e521ca73a46b2d3a28568dc49fced81e46aaea
fatal: ambiguous argument '27e521ca73a46b2d3a28568dc49fced81e46aaea~': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

git diff＜root_commit＞^！

显示diff btw根提交和HEAD。像这样：

$ git diff 27e521ca73a46b2d3a28568dc49fced81e46aaea^!
diff --git a/file1.txt b/file1.txt
new file mode 100644
index 0000000..80f3f1a
--- /dev/null
+++ b/file1.txt
@@ -0,0 +1,5 @@
+Create the first file.
+
+Add some placeholder text to first file.
+
+
diff --git a/file2.txt b/file2.txt
new file mode 100644
index 0000000..66e494f
--- /dev/null
+++ b/file2.txt
@@ -0,0 +1,6 @@
+This is the second file.
+
+It has an uncommited commit.
+
+We use it to demo default `git diff` behaviour.
+

（这些是所有提交对我的根提交和HEAD所做的更改）。

对于根提交

我只发现

git show--color--prett=格式：%b<root_commit_hash>

作品

像这样：

$ git show --color --pretty=format:%b 27e521ca73a46b2d3a28568dc49fced81e46aaea

diff --git a/README b/README
new file mode 100644
index 0000000..12a04f0
--- /dev/null
+++ b/README
@@ -0,0 +1,6 @@
+# git-diff-demo
+
+This repo documents the demo of the git diff command.
+We will have options, and use cases.

（我的根提交仅添加了README）

我在windows 10上运行的是Git 2.6.1.windows.1版本，所以我需要对Nevik的答案稍作修改（用波浪号代替插入符号）：

git diff COMMIT~ COMMIT

另一个选项是引用插入符号：

git diff "COMMIT^" COMMIT