Git教程学习(一)

教程来自: Git教程(廖雪峰的官方网站)

学习Git的基本内容,对教程内容进行理解并脱水

1. Git简介

2. 安装Git

1. ubuntu上安装Git

$ sudo apt-get install git

2. 配置Git: 为你在本地的所有repo指定用户名和邮箱

$ git config --global user.name "Your Name"
$ git config --global user.email "email@example.com"

　　其中'Your Name'为用户名,'email@example.com'为Email地址.

3. 创建版本库: 创建新的代码仓库(repository)

1. 建立空目录

$ mkdir learngit
$ cd learngit

2. 以当前目录为repo目录初始化repo

$ git init
Initialized empty Git repository in /Users/michael/learngit/.git/

3. 为repo添加文件

3.1. 新建文件readme.txt

Git is a version control system.
Git is free software.

3.2. 使用git add命令将文件提交到repo

$ git add readme.txt

3.3. 使用命令git commit将文件提交到repo (-m 参数后是提交版本说明,要好好写,不然以后很容易混乱)

$ git commit -m "wrote a readme file"
[master (root-commit) cb926e7] wrote a readme file
 1 file changed, 2 insertions(+)
 create mode 100644 readme.txt

在没有commit之前所有add的内容都不会提交到repo.

4. 时光机穿梭(好中二的名字..)

4.1. 在修改了readme.txt之后

Git is a distributed version control system.
Git is free software.

4.2. 运行git status可以查看当前repo的状态

$ git status
# 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:   readme.txt
#
no changes added to commit (use "git add" and/or "git commit -a")

4.3. 也可以使用git diff * 查看被修改文件的具体修改内容

$ git diff readme.txt 
diff --git a/readme.txt b/readme.txt
index 46d49bf..9247db6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,2 +1,2 @@
-Git is a version control system.
+Git is a distributed version control system.
 Git is free software.

4.4 再使用add和commit命令将修改提交到repo

$ git add readme.txt
$ git commit -m "add distributed"
[master ea34578] add distributed
 1 file changed, 1 insertion(+), 1 deletion(-)

　　使用git status可以查看目录中文件被修改,文件已添加和文件已提交的不同状态.