GIT是一个分布式版本管理系统，速度快，适合大规模，跨地区多人协同开。SVN是一个集中式版本管理系统。
（1）GIT生态
GIT分布式版本管理系统
Gitlab git私库解决方案
Github git公有库解决方案
（2）Git安装
Centos：
yum install -y git
Ubuntu：
apt-get install git
Windows安装git bash
Linux编译安装
注意不要使用git 1.8以下版本，推荐使用2.7版本
<code>①编译安装git
[root@linux-node1 ~]# yum install -y epel-release
安装依赖包：
[root@linux-node1 ~]# yum install -y curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc perl-ExtUtils-MakeMaker
[root@linux-node1 ~]# wget https://github.com/git/git/archive/v2.7.4.zip
[root@linux-node1 ~]# yum install -y unzip
[root@linux-node1 ~]# unzip git-v2.7.4.zip
[root@linux-node1 ~]# cd git-2.7.4
[root@linux-node1 git-2.7.4]# make prefix=/usr/local/git all
[root@linux-node1 git-2.7.4]# make prefix=/usr/local/git install
[root@linux-node1 git-2.7.4]# rm -rf /usr/bin/git
[root@linux-node1 git-2.7.4]# ln -s /usr/local/git/bin/git /usr/bin/git
[root@linux-node1 git-2.7.4]# git --version
git version 2.7.4
②初始化仓库
[root@linux-node1 ~]# mkdir test
[root@linux-node1 ~]# cd test
[root@linux-node1 test]# git init #将test目录初始化仓库
[root@linux-node1 test]# git config --global user.name"*****"
[root@linux-node1 test]# git config --global user.email *******@qq.com
四个区域：
远程仓库本地仓库暂存区域工作目录
四种状态
Untracked、Unmodified、Modified、Staged
Untracked（工作目录）-->git add -->Staged（暂存区）-->git commit版本-->Unmodified（本地仓库）-->Edit file-->Modified-->Stage the file-->Staged
③常用命令：
git add 加入暂存
git status 查看状态
git status -s 状态概览
git diff 尚未暂存的文件
git diff --staged 暂存区文件
git commit 提交更新
git reset 回滚
git rm 从版本库中移除
git rm --cached README 从暂存区中移除
git mv 相当于mv git rm git add 三个命令
使用演示：
[root@linux-node1 test]# touch index.html ==>创建文件
[root@linux-node1 test]# vim index.html
[root@linux-node1 test]# git status ==>此时文件处于工作目录中
位于分支 master
初始提交
未跟踪的文件:
（使用 "git add ..." 以包含要提交的内容）
index.html
提交为空，但是存在尚未跟踪的文件（使用 "git add" 建立跟踪）
[root@linux-node1 test]# git add index.html ==>加入代码库
[root@linux-node1 test]# git status ==>此时文件处于暂存区
位于分支 master
初始提交
要提交的变更：
（使用 "git rm --cached ..." 以取消暂存）
新文件： index.html
[root@linux-node1 test]# git commit -m "first commit" ==>提交到本地仓库
[master（根提交） c6bc04f] first commit
1 file changed, 3 insertions(+)
create mode 100644 index.html
[root@linux-node1 test]# git status
位于分支 master
无文件要提交，干净的工作区
[root@linux-node1 test]# git log
commit c6bc04f90d4ef442e2c4d5bc788b21de239332da ==>回滚需要的id
Author: ******
Date: Fri Dec 8 22:37:40 2017 +0800
first commit
[root@linux-node1 test]# touch pay.html
[root@linux-node1 test]# vim pay.html
[root@linux-node1 test]# git add pay.html
[root@linux-node1 test]# git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: pay.html
[root@linux-node1 test]# touch news.html
[root@linux-node1 test]# echo "123" > news.html
[root@linux-node1 test]# git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: pay.html
Untracked files:
(use "git add <file>..." to include in what will be committed)
news.html
[root@linux-node1 test]# git add news.html
[root@linux-node1 test]# git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: news.html
new file: pay.html
[root@linux-node1 test]# git rm --cached pay.html #将pay.html从暂存区移除
rm 'pay.html'
[root@linux-node1 test]# git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: news.html
Untracked files:
(use "git add <file>..." to include in what will be committed)
pay.html
[root@linux-node1 test]# git commit -m "news"
[master d83603a] news
1 file changed, 1 insertion(+)
create mode 100644 news.html
[root@linux-node1 test]# git status
On branch master
Untracked files:
(use "git add <file>..." to include in what will be committed)
pay.html
nothing added to commit but untracked files present (use "git add" to track)
[root@linux-node1 test]# git log
commit d83603a56b8926630d31b46898e4b6d69293d946
Author:********
Date: Fri Dec 8 22:48:37 2017 +0800
news
commit c6bc04f90d4ef442e2c4d5bc788b21de239332da
Author: *****************
Date: Fri Dec 8 22:37:40 2017 +0800
first commit
[root@linux-node1 test]# echo "66666" >> pay.html
[root@linux-node1 test]# git status
On branch master
Untracked files:
(use "git add <file>..." to include in what will be committed)
pay.html
nothing added to commit but untracked files present (use "git add" to track)
[root@linux-node1 test]# git add pay.html
[root@linux-node1 test]# git status
On branch master
Changes to be committed:
(use "git reset HEAD <file>..." to unstage)
new file: pay.html
[root@linux-node1 test]# git commit -m "pay modelue"
[master e55a302] pay modelue
1 file changed, 2 insertions(+)
create mode 100644 pay.html
[root@linux-node1 test]# git status
On branch master
nothing to commit, working directory clean
[root@linux-node1 test]# git log
commit e55a302e11d967fd25eac1cce8b6c7bed732019b
Author:******************
Date: Fri Dec 8 22:49:57 2017 +0800
pay modelue
commit d83603a56b8926630d31b46898e4b6d69293d946
Author: ******************
Date: Fri Dec 8 22:48:37 2017 +0800
news
commit c6bc04f90d4ef442e2c4d5bc788b21de239332da
Author: ******************
Date: Fri Dec 8 22:37:40 2017 +0800
first commit
/<file>/<file>/<file>/<file>/<file>/<file>/<file>/<file>/<file>/<code>
- 2、分支管理
<code>[root@linux-node1 test]# git status
On branch master
nothing to commit, working directory clean
建分支,开发新功能是不能在master分支上开发
[root@linux-node1 test]# git branch about #创建分支
[root@linux-node1 test]# git status
On branch master
nothing to commit, working directory clean
[root@linux-node1 test]# git checkout about #切换分支
Switched to branch 'about'
[root@linux-node1 test]# git status
On branch about
nothing to commit, working directory clean
[root@linux-node1 test]# git log #创建的分支是在master分支当前的状态进行创建的。所以在about分支上也会有master的记录
commit e55a302e11d967fd25eac1cce8b6c7bed732019b
Author: ************
Date: Fri Dec 8 22:49:57 2017 +0800
pay modelue
commit d83603a56b8926630d31b46898e4b6d69293d946
Author: ************
Date: Fri Dec 8 22:48:37 2017 +0800
news
commit c6bc04f90d4ef442e2c4d5bc788b21de239332da
Author: ************
Date: Fri Dec 8 22:37:40 2017 +0800
first commit
[root@linux-node1 test]# git branch
* about
master
[root@linux-node1 test]# touch about.html
[root@linux-node1 test]# echo "about us" >> about.html
[root@linux-node1 test]# git add .
[root@linux-node1 test]# git commit -m "about"
[about 08b200a] about
1 file changed, 1 insertion(+)
create mode 100644 about.html
[root@linux-node1 test]# git log
[root@linux-node1 test]# git checkout master #切换到master分支
Switched to branch 'master'
[root@linux-node1 test]# git log
[root@linux-node1 test]# git checkout about #切换到about分支
[root@linux-node1 test]# echo "about2" > about2.html
[root@linux-node1 test]# git add .
[root@linux-node1 test]# git commit -m "about2"
[root@linux-node1 test]# git log
[root@linux-node1 test]# git checkout master
[root@linux-node1 test]# git log
[root@linux-node1 test]# git merged about #在master分支上合并about分支
[root@linux-node1 test]# git log
[root@linux-node1 test]# git branch test #创建test分支
[root@linux-node1 test]# git checkout test
[root@linux-node1 test]# touch "test" > test.html
[root@linux-node1 test]# git add .
[root@linux-node1 test]# git commit -m "test"
[root@linux-node1 test]# git checkout master
[root@linux-node1 test]# git branch --merged #查看已经合并的分支
[root@linux-node1 test]# git branch --no-merged #查看未合并的分支
分支命令
git branch例出分支
git branch -v
git branch --merged查看哪些分支被合并
git branch --no-merged查看哪些分支未被合并
git branch -d testling删除分支
git checkout切换分支
git merged融合分支/<code>
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