2. 推送、拉取、克隆

2.1 GitHub推送本地库到远程库

基本语法：git push 别名 分支

# 将master分支推送到别名为hellogit远程地址，
# 也就推送到https://github.com/abc/HelloGit.git（具体看前一节）
# 这里需要授权认证操作（输入账号密码）
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop/HelloGit (master)
$ git push hellogit master
fatal: unable to access 'https://github.com/abc/HelloGit.git/': OpenSSL SSL_read: Connection was reset, errno 10054
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop/HelloGit (master)
$ git push hellogit master
Enumerating objects: 13, done.
Counting objects: 100% (13/13), done.
Delta compression using up to 8 threads
Compressing objects: 100% (9/9), done.
Writing objects: 100% (13/13), 1.02 KiB | 523.00 KiB/s, done.
Total 13 (delta 4), reused 0 (delta 0), pack-reused 0
remote: Resolving deltas: 100% (4/4), done.
To https://github.com/abc/HelloGit.git
 * [new branch]      master -> master

推送成功后，刷新GitHub账号即可。

凭据管理器可以删除已登录的github账号：

2.2 GitHub拉取远程库到本地库

基本语法：git push 别名 分支
在Github上修改hello.txt文件，并提交。

#从hellogit拉取到master分支上
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop/HelloGit (master)
$ git pull hellogit master
remote: Enumerating objects: 5, done.
remote: Counting objects: 100% (5/5), done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 3 (delta 1), reused 0 (delta 0), pack-reused 0
Unpacking objects: 100% (3/3), 672 bytes | 168.00 KiB/s, done.
From https://github.com/JallenKwong/HelloGit
 * branch            master     -> FETCH_HEAD
   785ab46..47e257f  master     -> hellogit/master
Updating 785ab46..47e257f
Fast-forward
 hello.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

2.3 GitHub克隆远程库到本地

基本语法：git clone 远程地址
clone 会做如下操作：

1. 拉取代码。
2. 初始化本地仓库。
3. 创建别名。

在远程库获取地址URL

# 创建一个新文件夹
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop
$ mkdir HelloGit-clone

abc@DESKTOP-R85C9HV MINGW64 ~/Desktop
$ cd HelloGit-clone/

# 在新的文件夹内，克隆远程库到本地
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop/HelloGit-clone
$ git clone https://github.com/abc/HelloGit.git
Cloning into 'HelloGit'...
remote: Enumerating objects: 16, done.
remote: Counting objects: 100% (16/16), done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 16 (delta 5), reused 12 (delta 4), pack-reused 0
Receiving objects: 100% (16/16), done.
Resolving deltas: 100% (5/5), done.
abc@DESKTOP-R85C9HV MINGW64 ~/Desktop/HelloGit-clone