git 经常使用操作集锦

创建仓库

新建普通仓库：

jxdong@ubuntu-server:~/workspace/git$ git init
Reinitialized existing Git repository in /home/jxdong/workspace/git/.git/

新建 bare 仓库：

jxdong@ubuntu-server:~/workspace/git.git$ git init --bare
Initialized empty Git repository in /home/jxdong/workspace/git.git/

bare 仓库里面不包括源码，仅仅具有版本号管理管理功能，无法运行 checkout 等代码管理操作：

jxdong@ubuntu-server:~/workspace/git.git$ ls
branches  config  description  HEAD  hooks  info  objects  refs

克隆仓库

克隆普通 git 仓库：

jxdong@ubuntu-server:~/workspace$ git clone git git_1
Cloning into 'git_1'...
done.
warning: You appear to have cloned an empty repository.

克隆为 bare 仓库：

jxdong@ubuntu-server:~/workspace$ git clone git git_1.git --bare
Cloning into bare repository 'git_1.git'...
done.
warning: You appear to have cloned an empty repository.

由于我们的仓库里面没有提交，所以 git 提示我们克隆了空的仓库

提交代码

第一次提交初始化的版本号能够是什么都没有：

jxdong@ubuntu-server:~/workspace/git$ git commit -m "init: first version." --allow-empty


[master (root-commit) 8a22ddf] init: first version.

jxdong@ubuntu-server:~/workspace/git$ git log 

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

加入项目文件

jxdong@ubuntu-server:~/workspace/git$ echo test > myfile1.txt

jxdong@ubuntu-server:~/workspace/git$ git add myfile1.txt

提交到本地仓库

jxdong@ubuntu-server:~/workspace/git$ git commit -m "work: add file1"

[master 8ed6d03] work: add file1

1 file changed, 1 insertion(+)

create mode 100644 myfile1.txt

查看历史

jxdong@ubuntu-server:~/workspace/git$ git log 

commit 8ed6d030278c0aef63052d6ba1946281c8a50ec8

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

回退版本号

作为提交的回退

revert 会撤销一次 commit 并把撤销操作作为 commit 提交，所以历史里面包括这次撤销操作的 commit

jxdong@ubuntu-server:~/workspace/git$ git log 

commit 746d6596b7d5b84db9c27ceef1063be977510c4e

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:44:22 2014 +0800

    Revert "work: add file1"

    This reverts commit 8ed6d030278c0aef63052d6ba1946281c8a50ec8.

commit 8ed6d030278c0aef63052d6ba1946281c8a50ec8

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

jxdong@ubuntu-server:~/workspace/git$ ls

强制删除一次提交

reset 与 –hard 參数，将会真正去掉这次commit， 将会删除 git 历史。比較危急，用于那些失败的 提交。

jxdong@ubuntu-server:~/workspace/git$ git reset --hard HEAD~1

HEAD is now at 8ed6d03 work: add file1

jxdong@ubuntu-server:~/workspace/git$ git log 

commit 8ed6d030278c0aef63052d6ba1946281c8a50ec8

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

jxdong@ubuntu-server:~/workspace/git$ ls 

myfile1.txt

改动提交历史

我们再加入一个文件，并提交。

jxdong@ubuntu-server:~/workspace/git$ echo test > myfile2.txt  

jxdong@ubuntu-server:~/workspace/git$ git add myfile2.txt

jxdong@ubuntu-server:~/workspace/git$ git commit -m "work: add file2"

[master 021f89c] work: add file2

1 file changed, 1 insertion(+)

create mode 100644 myfile2.txt

jxdong@ubuntu-server:~/workspace/git$ git log 

commit 021f89cfd5aa195cd841eb0e64a2d712cc1f8356

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:45:49 2014 +0800

    work: add file2

commit 8ed6d030278c0aef63052d6ba1946281c8a50ec8

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

rebase 命令能够回退到指定的提交处，然后改动这次提交之后的历史。

包括的功能：

1. pick，採用这次提交，什么也不做
2. reword，採用这次提交，仅仅是改动提交信息
3. edit，採用提交，并停在这次提交这里，你能够開始改动这次提交
4. squash，合并提交，将这次提交合并到之前的一次提交里面
5. fixup，与squash 一致，直接合并忽略提交信息
6. x，exec，运行一些命令

这里以合并为例

jxdong@ubuntu-server:~/workspace/git$ git rebase -i 8a22ddfaaf374531dbdba02ef40bb10006057f6f


pick 8ed6d03 work: add file1

pick 021f89c work: add file2

# Rebase 8a22ddf..021f89c onto 8a22ddf

#

# Commands:

#  p, pick = use commit

#  r, reword = use commit, but edit the commit message

#  e, edit = use commit, but stop for amending

#  s, squash = use commit, but meld into previous commit

#  f, fixup = like "squash", but discard this commit's log message

#  x, exec = run command (the rest of the line) using shell

#

# If you remove a line here THAT COMMIT WILL BE LOST.

# However, if you remove everything, the rebase will be aborted.

#

".git/rebase-merge/git-rebase-todo" 16L, 542C written                                 


Rebasing (2/2)

# This is a combination of 2 commits.

# The first commit's message is:

work: add file1

# This is the 2nd commit message:

work: add file2

# Please enter the commit message for your changes. Lines starting

# with '#' will be ignored, and an empty message aborts the commit.

# Not currently on any branch.

# Changes to be committed:

#   (use "git reset HEAD <file>..." to unstage)

#

#       new file:   myfile1.txt

#       new file:   myfile2.txt

#

                                                                                                            


~                                                                                                       


".git/COMMIT_EDITMSG" 18L, 438C written

[detached HEAD a5d9008] work: add file1

2 files changed, 2 insertions(+)

create mode 100644 myfile1.txt

create mode 100644 myfile2.txt

Successfully rebased and updated refs/heads/master.

看一下，合并后的历史

jxdong@ubuntu-server:~/workspace/git$ git log 

commit a5d9008e0d87302ed1dc9c5fa8957294efc3e403

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

    work: add file2

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800

    init: first version.

生成补丁

补丁的生成，-n 后面数字表示将要生成之前的多少次提交作为布丁。

jxdong@ubuntu-server:~/workspace/git$ git format-patch -n1

0001-work-add-file1.patch

应用布丁

应用布丁，须要具有同样祖先的 git 仓库，以避免错误，我们開始克隆过一个仓库，他们是来自同一个祖先

jxdong@ubuntu-server:~/workspace/git$ cd ..

jxdong@ubuntu-server:~/workspace$ cd git

git/       git_1/     git_1.git/ git.git/   

jxdong@ubuntu-server:~/workspace$ cd git_1

git_1/     git_1.git/ 

jxdong@ubuntu-server:~/workspace$ cd git_1

jxdong@ubuntu-server:~/workspace/git_1$ git am ../git/0001-work-add-file1.patch

Applying: work: add file1

applying to an empty history

获取远端仓库代码

加入远端

jxdong@ubuntu-server:~/workspace/git_1$ git remote add git ../git

获代替码

jxdong@ubuntu-server:~/workspace/git_1$ git fetch git 

warning: no common commits

remote: Counting objects: 5, done.

remote: Compressing objects: 100% (3/3), done.

remote: Total 5 (delta 0), reused 0 (delta 0)

Unpacking objects: 100% (5/5), done.

From ../git

* [new branch]      master     -> git/master

查看全部分支

jxdong@ubuntu-server:~/workspace/git_1$ git branch -a

* master

  remotes/git/master

表示当前在本地的 master 分支，我们另一个远端叫 git 的仓库，里面包括一个 master 分支

合并分支

我们先在分支上再提交一次，这次也加入一个文件。

jxdong@ubuntu-server:~/workspace/git_1$ echo test2 > myfile2.txt 

jxdong@ubuntu-server:~/workspace/git_1$ git commit -m "work: modfy file2"

# On branch master

# 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:   myfile2.txt

#

no changes added to commit (use "git add" and/or "git commit -a")

jxdong@ubuntu-server:~/workspace/git_1$ git commit -am "work: modfy file2"

[master 503a6c9] work: modfy file2

1 file changed, 1 insertion(+), 1 deletion(-)

jxdong@ubuntu-server:~/workspace/git_1$ git log 

commit 503a6c922a6a0f0fc298c1b5b8289fd2babb435c

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:50:30 2014 +0800

    work: modfy file2

commit 24651eb534f5f4db86e61e62f48d7959aaaf4e65

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

    work: add file2

合并分支

jxdong@ubuntu-server:~/workspace/git_1$ git merge git/master 

Auto-merging myfile2.txt

CONFLICT (add/add): Merge conflict in myfile2.txt

Automatic merge failed; fix conflicts and then commit the result.

处理冲突

首先查看冲突

jxdong@ubuntu-server:~/workspace/git_1$ git diff

diff --cc myfile2.txt

index 180cf83,9daeafb..0000000

--- a/myfile2.txt

+++ b/myfile2.txt

@@@ -1,1 -1,1 +1,5 @@@

++<<<<<<< HEAD

+test2

++=======

+ test

++>>>>>>> git/master

改动冲突并提交

解决冲突主要是看须要保留本地的内容还是要合并的内容

jxdong@ubuntu-server:~/workspace/git_1$ git commit -a

Merge remote-tracking branch 'git/master'

Conflicts:

        myfile2.txt

#

# It looks like you may be committing a merge.

# If this is not correct, please remove the file

#       .git/MERGE_HEAD

# and try again.

# Please enter the commit message for your changes. Lines starting

# with '#' will be ignored, and an empty message aborts the commit.

# On branch master

提交完毕合并成功

jxdong@ubuntu-server:~/workspace/git_1$ git log 

commit d1feccc31ba37983e2d217ec7b497bffebdde3f1

Merge: 503a6c9 a5d9008

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:56:46 2014 +0800

    Merge remote-tracking branch 'git/master'

    Conflicts:

        myfile2.txt

commit 503a6c922a6a0f0fc298c1b5b8289fd2babb435c

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:50:30 2014 +0800

    work: modfy file2

commit 24651eb534f5f4db86e61e62f48d7959aaaf4e65

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

    work: add file2

commit a5d9008e0d87302ed1dc9c5fa8957294efc3e403

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:43:52 2014 +0800

    work: add file1

    work: add file2

commit 8a22ddfaaf374531dbdba02ef40bb10006057f6f

Author: Royce Jiang <jiangxd@embedinfo.com>

Date:   Fri May 30 11:40:15 2014 +0800