GIT基础

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git介绍及基本使用

2021-05-20 16:49:05

git介绍及基本使用

一、版本控制器

完成协同开发项目,帮助程序员整合代码

  • 帮助开发者合并开发的代码,使用git实现版本的控制

  • 如果出现冲突代码的合并,会提示后提交合并代码的开发者,让其解决冲突

版本管理工具

  • SVN 、 GIT(都是同一个人的个人项目)

  • github、gitee(两个采用git版本控制器管理代码的公共平台)

· gitee:中国的版github(很多公司在用)

· github:远程仓库,全球最大的开源代码库

· gitlab:公司自己搭建的远程仓库,公司的代码放在上面

二、git基本介绍

1.简介

什么是git?

  • Git 是一个开源的分布式版本控制器

  • 控制的对象是开发的项目代码

git的特点:

  • 集群化、多分支

2.git与SVN的区别

Git 与 SVN 区别点:

  • 1、Git 是分布式的,SVN 不是:这是 Git 和其它非分布式的版本控制系统,例如 SVN,CVS 等,最核心的区别。

  • **2、Git 把内容按元数据方式存储,而 SVN 是按文件:**所有的资源控制系统都是把文件的元信息隐藏在一个类似 .svn、.cvs 等的文件夹里。

  • **3、Git 分支和 SVN 的分支不同:**分支在 SVN 中一点都不特别,其实它就是版本库中的另外一个目录。

  • **4、Git 没有一个全局的版本号,而 SVN 有:**目前为止这是跟 SVN 相比 Git 缺少的最大的一个特征。

  • **5、Git 的内容完整性要优于 SVN:**Git 的内容存储使用的是 SHA-1 哈希算法。这能确保代码内容的完整性,确保在遇到磁盘故障和网络问题时降低对版本库的破坏。

git介绍及基本使用_git
git介绍及基本使用_git教程_02

3.git 的工作流程

一般工作流程如下:

  • 克隆 Git 资源作为工作目录。

  • 在克隆的资源上添加或修改文件。

  • 如果其他人修改了,你可以更新资源。

  • 在提交前查看修改。

  • 提交修改。

  • 在修改完成后,如果发现错误,可以撤回提交并再次修改并提交。

git介绍及基本使用_git教程_03

4.版本库间的通信

git介绍及基本使用_git教程_04

5.git分支管理

git介绍及基本使用_git教程_05

三、git基本使用

1.工作流程(核心)

  • 工作区:就是你在电脑里能看到的目录。

如果工作区有内容一般显示为红色,就执行add

  • 暂存区:英文叫 stage 或 index。一般存放在 .git 目录下的 index 文件(.git/index)中,所以我们把暂存区有时也叫作索引(index)。

若内容全部在暂存区(显示绿色)才会执行commit

  • 版本库:工作区有一个隐藏目录 .git,这个不算工作区,而是 Git 的版本库。

只有被版本库控制的代码,才能被监听,所以可以回滚到任何一个版本

git介绍及基本使用_git教程_06

2.安装

打开 git官网,下载git对应操作系统的版本。

git介绍及基本使用_git教程_07

选择版本:

git介绍及基本使用_git_08

这里我选择下载** 64-bit Git for Windows Setup**

git介绍及基本使用_git_09

双击运行安装

git介绍及基本使用_git教程_10

选择安装配置信息,然后一直Next默认就好了,如果需要设置就要仔细读一下安装界面上的选项。

git介绍及基本使用_git_11

3.启动git

在任意路径下点右键,有两个程序:

  • Git GUI Here

  • Git Bash Here

git介绍及基本使用_git_12

**Git Bash:**Unix与Linux风格的命令行,使用最多,推荐最多

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Git GUI:图形界面的Git,不建议初学者使用,尽量先熟悉常用命令

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四、基础命令

Git 常用的是以下 6 个命令:git clonegit pushgit addgit commitgit checkoutgit pull,下面我们会详细介绍。

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说明:

  • workspace:工作区

  • staging area:暂存区/缓存区

  • local repository:版本库或本地仓库

  • remote repository:远程仓库

初始化仓库

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查看版本状态

  • 当仓库中有文件增加、删除、修改,都可以在仓库状态中查看

工作区内容提交到暂存区

提交暂存区内容到版本库

设置用户

设置全局

  • 在家路径新建一个.gitconfig文件,把用户名邮箱写进去

注:在全局文件C:\Users\用户文件夹\.gitconfig新建用户信息,在所有仓库下都可以使用

设置局部

  • 在项目路径的.git文件夹下的config文件中加入了用户名和邮箱

注意:

· 在当前仓库下的config新建用户信息,只能在当前仓库下使用

· 一个仓库有局部用户,优先使用局部用户,没有配置再找全局用户

工作区操作

撤销工作区操作:改、删(了解)

撤销暂存区提交:add的逆运算(很少使用)

撤销版本库提交:commit的逆运算

五、过滤文件

  • 我们项目中有一些文件,文件夹,不要提交到版本库

六、多分支开发

分支基本操作

七、Git远程开发

  • 远程仓库:github,码云,公司内部(gitlab)

1.两种本地与远程仓库同步

2.remote源操作(远程仓库)

3.Git远程连接仓库

远程创建仓库(建一个空仓库)

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4.git项目创始者和开发者

储备知识

项目创始者

项目开发者

七、采用ssh协议连接远程源(公司一般用这种)

1.采用ssh协议连接

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配置公匙到码云

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复制copy配置的私钥链接

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第五步: 实现ssh建立链接提交

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八、pycharm操作git

1.pycharm添加git

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2.创建文件将文件自动配置将工作区的内容add到暂存区

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3.提交内容到版本库

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4. 提交时如果没有指定commit+push组合键的情况

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5. 导航栏上面展示的提交图标是提交到本地的版本库

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6. git克隆操作

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git查看版本库信息

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7.添加修改远程仓库

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8.前版本和主版本做比较

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9.新建本地分支

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提示: 勾选Checkout branch默认切到当前创建的分支

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10.切换分支

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11.删除分支

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12.查看历史版本记录

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九、git的变基

十、协同开发

1.协同开发流程

注意: 最好一个功能作为一次本地的版本库提交.

2.协同开发出现冲突,如何解决

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3.冲突解决

4.分支合并

4.1 线上分支合并

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4.2 线下分支合并提交

5.远端如何创建一个分支

5.1 直接在远端仓库创建

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5.2 本地创建,提交到远端

6.分支合并出现冲突解决

6.1 本地分支合并出现冲突

dev分支新增了内容.

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dev_bug分支新增的内容和dev分支的部分内容是同一行

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在dev分支上, 当想将dev_bug合并过来, 冲突出现

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解决冲突: 对应冲突部分删除, 没有用的也删除

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冲突解决

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6.2 线上分支合并出现冲突

提示: 对于简单的行冲突会帮我们自动处理, 后来的即将冲突的代码会将之前的代码往下顶

注意1: 分支之间的切换, 最好要在当前分支没有被修改的情况下执行.

注意2: 千万不要把, 本地的dev分支合到master上!!!

master分支新增并提交到远程

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dev分支新增内容并提交到远程(新增的内容都在同一行

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远程将dev分支合并到master分支: 无法自动合并

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解决冲突: 线下合并, 解决冲突, 再提交到远程

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当前因为修改了内容, 因该add + commit, 再push到远程

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十一、远程仓库回滚

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十二、其他了解

最后更新于

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