Use GIT to get code for Linux kernel and view, track history

The official git address for Linux kernel is:

Http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git

You can get kernel's code warehouse from this address.

1. Take the Code warehouse

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1. git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git

2. View Status:

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1. $ git status
2. # on Branch Master
3. Nothing-to-commit (working directory clean)

3. Update the Local code:

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1. $ git pull
2. Already up-to-date.

4. Switch to the branch:

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1. $ git checkout linux-3.10.y
2. Checking out files:100% (25952/25952), done.
3. Switched to branch ' LINUX-3.10.Y '

5. View the branch information:

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1. $ git Branch
2. * LINUX-3.10.Y
3. Master

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2. $ git branch-a
4. * LINUX-3.10.Y
6. Master
8. Remotes/origin/head-Origin/master
10. Remotes/origin/linux-2.6.11.y
12. Remotes/origin/linux-2.6.12.y
14. Remotes/origin/linux-2.6.13.y
16. Remotes/origin/linux-2.6.14.y
18. Remotes/origin/linux-2.6.15.y
20. Remotes/origin/linux-2.6.16.y
22. Remotes/origin/linux-2.6.17.y
24. Remotes/origin/linux-2.6.18.y
26. Remotes/origin/linux-2.6.19.y
28. Remotes/origin/linux-2.6.20.y
30. Remotes/origin/linux-2.6.21.y
32. Remotes/origin/linux-2.6.22.y
34. Remotes/origin/linux-2.6.23.y
36. Remotes/origin/linux-2.6.24.y
38. Remotes/origin/linux-2.6.25.y
40. Remotes/origin/linux-2.6.26.y
42. Remotes/origin/linux-2.6.27.y
44. Remotes/origin/linux-2.6.28.y
46. Remotes/origin/linux-2.6.29.y
48. Remotes/origin/linux-2.6.30.y
50. Remotes/origin/linux-2.6.31.y
52. Remotes/origin/linux-2.6.32.y
54. Remotes/origin/linux-2.6.33.y
56. Remotes/origin/linux-2.6.34.y
58. Remotes/origin/linux-2.6.35.y
60. Remotes/origin/linux-2.6.36.y
62. Remotes/origin/linux-2.6.37.y
64. Remotes/origin/linux-2.6.38.y
66. Remotes/origin/linux-2.6.39.y
68. Remotes/origin/linux-3.0.y
70. Remotes/origin/linux-3.1.y
72. Remotes/origin/linux-3.10.y
74. Remotes/origin/linux-3.11.y
76. Remotes/origin/linux-3.12.y
78. Remotes/origin/linux-3.13.y
80. Remotes/origin/linux-3.14.y
82. Remotes/origin/linux-3.2.y
84. Remotes/origin/linux-3.3.y
86. Remotes/origin/linux-3.4.y
88. Remotes/origin/linux-3.5.y
90. Remotes/origin/linux-3.6.y
92. Remotes/origin/linux-3.7.y
94. Remotes/origin/linux-3.8.y
96. Remotes/origin/linux-3.9.y
98. Remotes/origin/master

6. Create a new branch:

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1. $ git checkout-b linux-3.10-charles
2. Switched to a new branch ' Linux-3.10-charles '

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1. $ git Branch
2. * Linux-3.10-charles
3. Linux-3.10.y
4. Master

7. Modify the file init/main.c, add a line of comments, and then execute

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1. git Add.

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1. $ git status
2. # on Branch Linux-3.10-charles
3. # Changes to be committed:
4. # (use "Git reset HEAD <file; ..." to Unstage)
5. #
6. # MODIFIED:INIT/MAIN.C
7. #

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1. E$&NBSP;GIT&NBSP;ADD&NBSP;-I&NBSP;&NBSP;
2.             staged     unstaged path   
3.   1:        +2/-0       nothing init/main.c  
4.   
5. ** * commands ***  
6.   1: [s]tatus     2:  [u]pdate     3: [r]evert     4: [a]dd  untracked  
7. &NBSP;&NBSP;5:&NBSP;[P]ATCH&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;6:  [d]iff   7: [q]uit   8: [h]elp  
8. What now >   

If you choose the Revert command, the equivalent of undo "git Add.":

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2. What's now> R
4. Staged unstaged path
6. 1: +2/-0 Nothing [i]nit/main.c
8. Revert>>
10. Reverted one path
14. Commands * * *
16. 1: [S]tatus 2: [u]pdate 3: [R]evert 4: [A]dd untracked
18. 5: [P]atch 6: [D]iff 7: [q]uit 8: [H]elp
20. What's now> Q

At this point, git status is executed:

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2. $ git status
4. # on Branch Linux-3.10-charles
6. # changes not staged for commit:
8. # (use "git add <file; ..." to update What'll be committed)
10. # (use "Git checkout- <file ..." to discard changes in working directory)
12. #
14. # MODIFIED:INIT/MAIN.C
16. #
18. No changes added to commit (use "git add" and/or "Git Commit-a")

8. Submit Changes:

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1. $ git commit-a-M "This was just for testing git"
2. [Linux-3.10-charles 9eabb78] This is just for testing git
3. 1 file changed, 1 insertion (+), 1 deletion (-)

9. View the change history (git log):

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2. Commit 9EABB788B5C33EFED589B1263AEDD69B97E592AC
4. Author:taotao Ding <[email protected]>
6. Date:wed 7 03:36:55 2014 +0900
10. This is just for testing git
14. Commit 5D897EEDC505BB8AF1F4865AE381EADBFD3BC8C1
16. Author:greg Kroah-hartman <[email protected]>
18. Date:tue May 6 07:56:24 2014-0700
22. Linux 3.10.39
26. Commit 6B32172A1D3CFFA74067CED96612BD13658D4FCF
28. Author:felipe Balbi <[email protected]>
30. Date:tue Feb 25 10:58:43 2014-0600
34. Usb:musb:avoid NULL Pointer dereference

As you can see, the changes have been recorded.

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2. Git log-p
4. Commit 9EABB788B5C33EFED589B1263AEDD69B97E592AC
6. Author:taotao Ding <[email protected]>
8. Date:wed 7 03:36:55 2014 +0900
12. This is just for testing git
16. Diff--git A/init/main.c B/init/main.c
18. Index E83AC04: Febc1e9 100644
20. ---a/init/main.c
22. + + B/INIT/MAIN.C
24. @@ -10,7 +10,7 @@
26. */
30. #define DEBUG/* Enable Initcall_debug */
32. -
34. +/* This was a test line for git */
36. #include <linux/types.h>
38. #include <linux/module.h>
40. #include <linux/proc_fs.h>

10: View a file's most recent modification record:

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2. $ git log master: HEAD INIT/MAIN.C
4. Commit 9EABB788B5C33EFED589B1263AEDD69B97E592AC
6. Author:taotao Ding <[email protected]>
8. Date:wed 7 03:36:55 2014 +0900
12. This is just for testing git
16. Commit B7A52F5111BC53FFBFFF96330621CBDE80DF6BA4
18. Author:theodore Ts ' O <[email protected]>
20. Date:tue SEP 10 10:52:35 2013-0400
24. Random:run Random_int_secret_init () run after all Late_initcalls
28. Commit 47D06E532E95B71C0DB3839EBDEF3FE8812FCA2C upstream.
32. The some platforms (e.g., ARM) initializes their clocks as
34. Late_initcalls for some unknown reason. So make sure
36. Random_int_secret_init () is a run after any of the late_initcalls is
38. Run.
42. Signed-off-by: "Theodore Ts ' O" <[email protected]>
44. Signed-off-by:greg Kroah-hartman <[email protected]>

11: Compare the differences between the two branches:

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1. $ git log linux-3.10.y. Linux-3.10-charles
2. Commit 9EABB788B5C33EFED589B1263AEDD69B97E592AC
3. Author:taotao Ding <[email protected]>
4. Date:wed 7 03:36:55 2014 +0900
6. This is just for testing git

The current branch can also be written as HEAD, so:

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1. $ git log linux-3.10.y. HEAD
2. Commit 9EABB788B5C33EFED589B1263AEDD69B97E592AC
3. Author:taotao Ding <[email protected]>
4. Date:wed 7 03:36:55 2014 +0900
6. This is just for testing git

Reference

http://www.opensourceforu.com/2011/05/linux-kernel-development-using-git/

P.S.

Ways to configure username and User.email:

git config user.email "username"

git config user.email "[email protected]"

These two commands change the. Git/config configuration file (local)

git config--global user.email "username"

git config--global user.email "[Email protected]"

git config--global core.editor "vim"
Then change the global git configuration file (~/.gitconfig)

Use GIT to get code for Linux kernel and view, track history