Linux kernel 的官方 GIT地址是：
http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git
可以从这个地址拿到 kernel 的 代码仓库。
1. 拿代码仓库
git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
2. 查看状态：
3. 更新本地的代码：
$ git pull
Already up-to-date.
4. 切换到分支：
$ git checkout linux-3.10.y Checking out files: 100% (25952/25952), done. Switched to branch 'linux-3.10.y'
5. 查看分支信息：
$ git branch * linux-3.10.y master
6. 创建一个新分支：
$ git checkout -b linux-3.10-charles Switched to a new branch 'linux-3.10-charles'
$ git branch * linux-3.10-charles linux-3.10.y master
7. 修改文件 init/main.c, 加入一行注释，然后 执行
git add .
$ git status # On branch linux-3.10-charles # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # # modified: init/main.c #
如果选择 revert 命令，相当于 undo "git add .":
What now> r staged unstaged path 1: +2/-0 nothing [i]nit/main.c Revert>> reverted one path *** Commands *** 1: [s]tatus 2: [u]pdate 3: [r]evert 4: [a]dd untracked 5: [p]atch 6: [d]iff 7: [q]uit 8: [h]elp What now> q
这个时候再执行 git status:
$ git status # On branch linux-3.10-charles # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: init/main.c # no changes added to commit (use "git add" and/or "git commit -a")
8. 提交修改：
$ git commit -a -m "This is just for testing git" [linux-3.10-charles 9eabb78] This is just for testing git 1 file changed, 1 insertion(+), 1 deletion(-)
9. 查看修改记录(git log)：
commit 9eabb788b5c33efed589b1263aedd69b97e592ac Author: Taotao Ding <htdkd@hotmail.com> Date: Wed May 7 03:36:55 2014 +0900 This is just for testing git commit 5d897eedc505bb8af1f4865ae381eadbfd3bc8c1 Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Date: Tue May 6 07:56:24 2014 -0700 Linux 3.10.39 commit 6b32172a1d3cffa74067ced96612bd13658d4fcf Author: Felipe Balbi <balbi@ti.com> Date: Tue Feb 25 10:58:43 2014 -0600 usb: musb: avoid NULL pointer dereference
可以看到，修改已经被记录起来了。
git log -p commit 9eabb788b5c33efed589b1263aedd69b97e592ac Author: Taotao Ding <htdkd@hotmail.com> Date: Wed May 7 03:36:55 2014 +0900 This is just for testing git diff --git a/init/main.c b/init/main.c index e83ac04..febc1e9 100644 --- a/init/main.c +++ b/init/main.c @@ -10,7 +10,7 @@ */ #define DEBUG /* Enable initcall_debug */ - +/* This is a test line for git */ #include <linux/types.h> #include <linux/module.h> #include <linux/proc_fs.h>
10： 查看一个文件最近的修改记录：
$ git log master..HEAD init/main.c commit 9eabb788b5c33efed589b1263aedd69b97e592ac Author: Taotao Ding <htdkd@hotmail.com> Date: Wed May 7 03:36:55 2014 +0900 This is just for testing git commit b7a52f5111bc53ffbfff96330621cbde80df6ba4 Author: Theodore Ts'o <tytso@mit.edu> Date: Tue Sep 10 10:52:35 2013 -0400 random: run random_int_secret_init() run after all late_initcalls commit 47d06e532e95b71c0db3839ebdef3fe8812fca2c upstream. The some platforms (e.g., ARM) initializes their clocks as late_initcalls for some unknown reason. So make sure random_int_secret_init() is run after all of the late_initcalls are run. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11： 比较两个分支的差异：
$ git log linux-3.10.y..linux-3.10-charles commit 9eabb788b5c33efed589b1263aedd69b97e592ac Author: Taotao Ding <htdkd@hotmail.com> Date: Wed May 7 03:36:55 2014 +0900 This is just for testing git
当前分支也可写成 HEAD，所以：
$ git log linux-3.10.y..HEAD commit 9eabb788b5c33efed589b1263aedd69b97e592ac Author: Taotao Ding <htdkd@hotmail.com> Date: Wed May 7 03:36:55 2014 +0900 This is just for testing git
reference:
http://www.opensourceforu.com/2011/05/linux-kernel-development-using-git/
P.S.
配置 username 和 user.email 的方法：
git config user.email "username"
git config user.email "email@server"
这两个命令改变 .git/config 配置文件 （local)
git config --global user.email "username"
git config --global user.email "email@server"
git config --global core.editor "vim"
则改变全局的 git 配置文件 （～/.gitconfig)