Git应用进阶（二）
作者：互联网
Git进阶（二）
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概述：
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Git 分支
1.分支命名法则及常用命令
master（主干分支） 是指向指定分支的最近一次提交；
dev 是指向dev分支的最近一次提交；
不管有多少分支，活动分支只能有一个；
head 一定是指向某个分支的，head表示 映射了当前工作目录当中所反映的最近一次提交；即 head始终指向活动分支的最近一次提交；
★分支命名法则
可以使用"/"，但不能使用"/"结尾；
不能以 "-" 开头；
以位于 "/" 后面的组件，不能以 "." 开头；
不能使用连续的 "...";
不能使用空白字符" "；
不能使用"^","~","?","*","[" 等符号
必须唯一，分支的名字始终指向目标分支的最近一次提交；
★git branch :列出，创建及删除分支
git branch BRANCH_NAME [START_COMMIT]
git branch -d BRANCH_NAME 删除分支
★git show-branch：查看分支及其相关的提交
★git checkout
git checkout <branch> 检出分支
演示1：git 创建分支
[root@node1 test]# ls first.sh INSTALL readmin subdir [root@node1 test]# git branch --list * master # 带"*"表示当前分支 [root@node1 test]# git log commit 3c0b6864718ec8f8aebb5b66fbfd65b757504169 (HEAD -> master) Author: watao <wangzhangtao@pachiratech.com> Date: Mon Aug 19 23:06:00 2019 +0800 v0.0.2 commit b0e9cc432d3adb683963686a2eec197129ef48b8 Author: watao <wangzhangtao@pachiratech.com> Date: Tue Jul 16 23:26:38 2019 +0800 v0.0.1 [root@node1 test]# git status On branch master Changes to be committed: (use "git reset HEAD <file>..." to unstage) new file: first.sh Untracked files: (use "git add <file>..." to include in what will be committed) readmin [root@node1 test]# git commit -m 'v1.0' [master 13051f2] v1.0 1 file changed, 4 insertions(+) create mode 100644 first.sh [root@node1 test]# git status On branch master Untracked files: (use "git add <file>..." to include in what will be committed) readmin nothing added to commit but untracked files present (use "git add" to track) [root@node1 test]# git ls-files -s 100644 b6a56662e48ee60ef2d65fd2b00dd555e758b7fa 0 INSTALL 100644 1809e7ac283fd186a50d97b1462d2d27396f9b42 0 first.sh 100644 a4ec1ecd97368714ba8b5c8d002b1a24647bb7ec 0 subdir/1.txt [root@node1 test]# git add readmin [root@node1 test]# git ls-files -s 100644 b6a56662e48ee60ef2d65fd2b00dd555e758b7fa 0 INSTALL 100644 1809e7ac283fd186a50d97b1462d2d27396f9b42 0 first.sh 100644 8bf9463e75dfb20077fafb8358ee3cb471dd7900 0 readmin 100644 a4ec1ecd97368714ba8b5c8d002b1a24647bb7ec 0 subdir/1.txt [root@node1 test]# git commit -m 'v1.1' [master e522483] v1.1 1 file changed, 1 insertion(+) create mode 100644 readmin [root@node1 test]# git log commit e522483313931f3dbc914ff6e132f5cd205f7d62 (HEAD -> master) Author: watao <wangzhangtao@pachiratech.com> Date: Wed Aug 21 22:48:52 2019 +0800 v1.1 commit 13051f2788b17981a72f641e6b30bc8bea0f2e38 Author: watao <wangzhangtao@pachiratech.com> Date: Wed Aug 21 22:46:23 2019 +0800 v1.0 commit 3c0b6864718ec8f8aebb5b66fbfd65b757504169 Author: watao <wangzhangtao@pachiratech.com> Date: Mon Aug 19 23:06:00 2019 +0800 v0.0.2 commit b0e9cc432d3adb683963686a2eec197129ef48b8 Author: watao <wangzhangtao@pachiratech.com> Date: Tue Jul 16 23:26:38 2019 +0800 v0.0.1 [root@node1 test]# git branch * master # 指明1.0版本创建分支 [root@node1 test]# git branch dev 13051f [root@node1 test]# git branch dev * master [root@node1 test]# git branch bug/first [root@node1 test]# git branch bug/first dev * master
演示2：git show-branch 查看分支
# git show-branch 查看具体的分支信息 [root@node1 test]# git show-branch ! [bug/first] v1.1 ! [dev] v1.0 * [master] v1.1 --- + * [bug/first] v1.1 ++* [dev] v1.0 [root@node1 test]# git show-branch dev [dev] v1.0 [root@node1 test]# [root@node1 test]# git show-branch bug/first [bug/first] v1.1
演示3：git checkout BRANCH_NAME 切换分支
[root@node1 taotao]# git checkout dev #切换分支 Switched to branch 'dev' [root@node1 taotao]# [root@node1 taotao]# git branch --list bug/first * dev master [root@node1 taotao]# [root@node1 taotao]# git show-branch ! [bug/first] v1.1 * [dev] v1.0 ! [master] v1.1 --- + + [bug/first] v1.1 +*+ [dev] v1.0 [root@node1 taotao]# [root@node1 taotao]# [root@node1 taotao]# git log commit 5d4298d6fdcbb6276e69f002e7148210124e52d9 (HEAD -> dev) Author: watao <wangzhangtao@pachiratech.com> Date: Wed Oct 9 22:04:34 2019 +0800 v1.0 commit b9182448b3e9503ce5fd09edb5b378f612209d01 Author: watao <wangzhangtao@pachiratech.com> Date: Wed Oct 9 21:05:05 2019 +0800 v0.0.2 commit 1b5d8e0fea57e85045c8d98f12e379fdc73138bc Author: watao <wangzhangtao@pachiratech.com> Date: Tue Oct 8 21:24:06 2019 +0800 v0.0.1 ############################# [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" [root@node1 taotao]# [root@node1 taotao]# git status On branch dev 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: first.sh no changes added to commit (use "git add" and/or "git commit -a") [root@node1 taotao]# git add first.sh [root@node1 taotao]# git commit -m "v1.1-dev" [dev 587719d] v1.1-dev 1 file changed, 1 insertion(+) [root@node1 taotao]# git log commit 587719dd3920429904c2b2a24637f20ecd20c4e0 (HEAD -> dev) Author: watao <wangzhangtao@pachiratech.com> Date: Fri Oct 11 22:34:41 2019 +0800 v1.1-dev commit 5d4298d6fdcbb6276e69f002e7148210124e52d9 Author: watao <wangzhangtao@pachiratech.com> Date: Wed Oct 9 22:04:34 2019 +0800 v1.0 commit b9182448b3e9503ce5fd09edb5b378f612209d01 Author: watao <wangzhangtao@pachiratech.com> Date: Wed Oct 9 21:05:05 2019 +0800 v0.0.2 commit 1b5d8e0fea57e85045c8d98f12e379fdc73138bc Author: watao <wangzhangtao@pachiratech.com> Date: Tue Oct 8 21:24:06 2019 +0800 v0.0.1 [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" # 切回主分支，再次查看first.sh，发现还是原来的，因为master分支并没有提交新的操作 [root@node1 taotao]# git checkout master Switched to branch 'master' [root@node1 taotao]# [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" # 不被追踪的文件在所有分支上都可以看见 [root@node1 taotao]# git checkout dev Switched to branch 'dev' [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" [root@node1 taotao]# [root@node1 taotao]# vim second.sh [root@node1 taotao]# cat second.sh #!/bin/bash echo "second.sh" [root@node1 taotao]# ls first.sh INSTALL second.sh subdir [root@node1 taotao]# [root@node1 taotao]# git checkout master Switched to branch 'master' [root@node1 taotao]# [root@node1 taotao]# ls first.sh INSTALL readmin second.sh subdir [root@node1 taotao]# cat second.sh #!/bin/bash echo "second.sh" # 添加到索引发现在所有分支上依然可以看见 [root@node1 taotao]# git add second.sh [root@node1 taotao]# git status On branch master Changes to be committed: (use "git reset HEAD <file>..." to unstage) new file: second.sh [root@node1 taotao]# git checkout dev A second.sh Switched to branch 'dev' [root@node1 taotao]# git status On branch dev Changes to be committed: (use "git reset HEAD <file>..." to unstage) new file: second.sh #在dev分支上提交 [root@node1 taotao]# git commit -m "v1.1.1-dev" [dev 21a0411] v1.1.1-dev 1 file changed, 2 insertions(+) create mode 100644 second.sh [root@node1 taotao]# git status On branch dev nothing to commit, working tree clean #再次切回master分支，发现second.sh 已经没有了 [root@node1 taotao]# git checkout master Switched to branch 'master' [root@node1 taotao]# ls first.sh INSTALL readmin subdir [root@node1 taotao]# git status On branch master nothing to commit, working tree clean #在主分支创建一个second文件,然后切回dev分支报错，因为和dev分支中已提交的second 发生冲突 [root@node1 taotao]# echo "#XIUXIU" > second.sh [root@node1 taotao]# git status On branch master Untracked files: (use "git add <file>..." to include in what will be committed) second.sh nothing added to commit but untracked files present (use "git add" to track)
[root@node1 taotao]# git checkout dev error: The following untracked working tree files would be overwritten by checkout: second.sh Please move or remove them before you switch branches. Aborting [root@node1 taotao]# git add second.sh [root@node1 taotao]# git checkout dev error: Your local changes to the following files would be overwritten by checkout: second.sh Please commit your changes or stash them before you switch branches. Aborting #删除master主分支的second后，顺利切换到dev分支 [root@node1 taotao]# git rm -f second.sh rm 'second.sh' [root@node1 taotao]# git checkout dev Switched to branch 'dev' [root@node1 taotao]# git status On branch dev nothing to commit, working tree clean [root@node1 taotao]# git show-branch ! [bug/first] v1.1 * [dev] v1.1.1-dev ! [master] v1.1 --- * [dev] v1.1.1-dev * [dev^] v1.1-dev + + [bug/first] v1.1 +*+ [dev~2] v1.0 [root@node1 taotao]# git show-branch --more=10 ! [bug/first] v1.1 * [dev] v1.1.1-dev ! [master] v1.1 --- * [dev] v1.1.1-dev * [dev^] v1.1-dev + + [bug/first] v1.1 +*+ [dev~2] v1.0 +*+ [dev~3] v0.0.2 +*+ [dev~4] v0.0.1 演示4：git checkout -d BRANCH_NAME 删除分支 [root@node1 taotao]# git branch -d bug/first Deleted branch bug/first (was 5685269). [root@node1 taotao]# git branch --list dev * master
1.合并分支
★相关概念
合并基础：要合并的分支的最近一次的共同提交；
我们的版本：当前分支的最近一次提交；
他们的版本：要合并进来的分支的最近一次提交；
☉无冲突合并：
git checkout master; 检出到主分支
git status 检查是否有未提交的信息
git merge BRANCH_NAME 从他们的版本合并到我们的版本
git log --graph --pretty=oneline --abbrev-commit 以图形的方式查看
演示1：无冲突的合并
[root@node1 taotao]# git branch --list dev * master [root@node1 taotao]# [root@node1 taotao]# [root@node1 taotao]# git merge dev Merge made by the 'recursive' strategy. first.sh | 1 + second.sh | 2 ++ 2 files changed, 3 insertions(+) create mode 100644 second.sh [root@node1 taotao]# [root@node1 taotao]# git status On branch master nothing to commit, working tree clean [root@node1 taotao]# git show-branch ! [dev] v1.1.1-dev * [master] Merge branch 'dev' -- - [master] Merge branch 'dev' +* [dev] v1.1.1-dev [root@node1 taotao]# git log --graph --pretty=oneline --abbrev-commit * 43d8e9a (HEAD -> master) Merge branch 'dev' |\ | * 21a0411 (dev) v1.1.1-dev | * 587719d v1.1-dev * | 5685269 v1.1 |/ * 5d4298d v1.0 * b918244 v0.0.2 * 1b5d8e0 v0.0.1
演示2：有冲突的合并
[root@node1 taotao]# echo "taotaohuihui" > my.txt [root@node1 taotao]# git add my.txt [root@node1 taotao]# git commit -m "v2.0" [master 1df3da7] v2.0 1 file changed, 1 insertion(+) create mode 100644 my.txt [root@node1 taotao]# git log --graph --pretty=oneline --abbrev-commit * 1df3da7 (HEAD -> master) v2.0 # 新创建的提交 * 43d8e9a Merge branch 'dev' |\ | * 21a0411 (dev) v1.1.1-dev | * 587719d v1.1-dev * | 5685269 v1.1 |/ * 5d4298d v1.0 * b918244 v0.0.2 * 1b5d8e0 v0.0.1 [root@node1 taotao]# git branch dev fatal: A branch named 'dev' already exists. #dev分支存在不能创建相同的，实际上可以删除了，因为已经合并到master分支上去了 [root@node1 taotao]# [root@node1 taotao]# [root@node1 taotao]# git branch fotfix # 在master 2.0 的基础上常见fotfix分支 [root@node1 taotao]# git show-branch ! [dev] v1.1.1-dev ! [fotfix] v2.0 * [master] v2.0 --- +* [fotfix] v2.0 -- [fotfix^] Merge branch 'dev' ++* [dev] v1.1.1-dev [root@node1 taotao]# echo "third line" >> first.sh # 修改master分支的内容 [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" third line [root@node1 taotao]# git add first.sh [root@node1 taotao]# git commit -m "v2.1" [master 697a6c5] v2.1 1 file changed, 1 insertion(+) [root@node1 taotao]# git show-branch ! [dev] v1.1.1-dev ! [fotfix] v2.0 * [master] v2.1 --- * [master] v2.1 +* [fotfix] v2.0 -- [fotfix^] Merge branch 'dev' ++* [dev] v1.1.1-dev [root@node1 taotao]# git checkout fotfix #切换到fotfix分支 Switched to branch 'fotfix' [root@node1 taotao]# ls first.sh INSTALL my.txt readmin second.sh subdir [root@node1 taotao]# [root@node1 taotao]# echo "new line" >> first.sh # 编辑first文件并提交 [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" new line [root@node1 taotao]# git add first.sh [root@node1 taotao]# git commit -m "v2.0-1" [fotfix 26b42ef] v2.0-1 1 file changed, 1 insertion(+) [root@node1 taotao]# git show-branch ! [dev] v1.1.1-dev * [fotfix] v2.0-1 ! [master] v2.1 --- * [fotfix] v2.0-1 + [master] v2.1 *+ [fotfix^] v2.0 -- [fotfix~2] Merge branch 'dev' +*+ [dev] v1.1.1-dev # 切回主分支，然后合并 fotfix分支，发现报错，即内容发生冲突。需手动修复冲突后再合并 [root@node1 taotao]# git checkout master Switched to branch 'master' [root@node1 taotao]# [root@node1 taotao]# [root@node1 taotao]# git merge fotfix Auto-merging first.sh CONFLICT (content): Merge conflict in first.sh Automatic merge failed; fix conflicts and then commit the result. 不能合并成功的文件，发现三个版本中 first.sh 内容各不相同 [root@node1 taotao]# git ls-files INSTALL first.sh first.sh first.sh my.txt readmin second.sh subdir/1.txt [root@node1 taotao]# [root@node1 taotao]# git ls-files --unmerged 100644 816a1b1e686cf6adb716b10e1a9eed870b2f18fa 1first.sh # "1" 表示合并基础 100644 3adec3b3bf2616c52eaba36bd8af2e79e9ef6495 2first.sh # "2" 表示我们的版本 100644 e45ccd5a231f9debdd84ffd621cdc3acfc8d15f1 3first.sh # "3" 表示他们的版本 [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" <<<<<<< HEAD third line ======= new line >>>>>>> fotfix [root@node1 taotao]# git diff diff --cc first.sh index 3adec3b,e45ccd5..0000000 --- a/first.sh +++ b/first.sh @@@ -1,4 -1,4 +1,8 @@@ #!/bin/bash echo "hello world" echo "new date" ++<<<<<<< HEAD "<<<<"或">>>>>"为三方提交符号 +third line #为主分支最近一次提交的内容 ++======= + new line ++>>>>>>> fotfix #为其他版本最近一次提交的内容 #直接在冲突文件的基础上修改即可，如想要都保留的话就把"三方提交符号"给删除 [root@node1 taotao]# vim first.sh [root@node1 taotao]# git diff diff --cc first.sh index 3adec3b,e45ccd5..0000000 --- a/first.sh +++ b/first.sh @@@ -1,4 -1,4 +1,5 @@@ #!/bin/bash echo "hello world" echo "new date" +third line + new line [root@node1 taotao]# cat first.sh #!/bin/bash echo "hello world" echo "new date" third line new line #修改好之后重新添加到索引并提交 [root@node1 taotao]# git add first.sh [root@node1 taotao]# git commit #出现内容提示，保存即可 [master dd73764] Merge branch 'fotfix' [root@node1 taotao]# git log --graph --pretty=oneline --abbrev-commit * dd73764 (HEAD -> master) Merge branch 'fotfix' |\ | * 26b42ef (fotfix) v2.0-1 * | 697a6c5 v2.1 |/ * 1df3da7 v2.0 * 43d8e9a Merge branch 'dev' |\ | * 21a0411 (dev) v1.1.1-dev | * 587719d v1.1-dev * | 5685269 v1.1 |/ * 5d4298d v1.0 * b918244 v0.0.2 * 1b5d8e0 v0.0.1
标签：git,taotao,进阶,dev,sh,Git,应用,node1,root 来源： https://blog.51cto.com/1992tao/2446121