First-Time Git Setup (初次运行 Git 前的配置)-Toy模板网

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Pro Git (SECOND EDITION)
https://git-scm.com/book/en/v2

Pro Git (SECOND EDITION)
https://git-scm.com/book/zh/v2

You should have to do these things only once on any given computer; they’ll stick around between upgrades.
每台计算机上只需要配置一次，程序升级时会保留配置信息。

1. git config

Git comes with a tool called git config that lets you get and set configuration variables that control all aspects of how Git looks and operates. These variables can be stored in three different places:

[path]/etc/gitconfig file

Contains values applied to every user on the system and all their repositories. If you pass the option --system to git config, it reads and writes from this file specifically. Because this is a system configuration file, you would need administrative or superuser privilege to make changes to it.
包含系统上每一个用户及他们仓库的通用配置。如果在执行 git config 时带上 --system 选项，那么它就会读写该文件中的配置变量。由于它是系统配置文件，因此你需要管理员或超级用户权限来修改它。

~/.gitconfig or ~/.config/git/config file

Values specific personally to you, the user. You can make Git read and write to this file specifically by passing the --global option, and this affects all of the repositories you work with on your system.
只针对当前用户。你可以传递 --global 选项让 Git 读写此文件，这会对你系统上所有的仓库生效。

config file in the Git directory (that is, .git/config) of whatever repository you’re currently using

Specific to that single repository. You can force Git to read from and write to this file with the --local option, but that is in fact the default. Unsurprisingly, you need to be located somewhere in a Git repository for this option to work properly.
针对该仓库。你可以传递 --local 选项让 Git 强制读写此文件，虽然默认情况下用的就是它。当然，你需要进入某个 Git 仓库中才能让该选项生效。

On Windows systems, Git looks for the .gitconfig file in the $HOME directory (C:\Users\$USER for most people). It also still looks for [path]/etc/gitconfig, although it’s relative to the MSys root, which is wherever you decide to install Git on your Windows system when you run the installer.
在 Windows 系统中，Git 会查找 $HOME 目录下 (一般情况下是 C:\Users\$USER) 的 .gitconfig 文件。Git 同样也会寻找 [path]/etc/gitconfig 文件，但只限于 MSys 的根目录下，即安装 Git 时所选的目标位置。

If you are using version 2.x or later of Git for Windows, there is also a system-level config file at C:\Documents and Settings\All Users\Application Data\Git\config on Windows XP, and in C:\ProgramData\Git\config on Windows Vista and newer. This config file can only be changed by git config -f <file> as an admin.

You can view all of your settings and where they are coming from using:

$ git config --list --show-origin

(base) yongqiang@yongqiang:~$ git config --list --show-origin
file:/home/yongqiang/.gitconfig user.email=chengyq******@163.com
file:/home/yongqiang/.gitconfig user.name=chengyq******@163.com
file:/home/yongqiang/.gitconfig core.editor=vim
(base) yongqiang@yongqiang:~$

1.1. Your Identity (用户信息)

The first thing you should do when you install Git is to set your user name and email address. This is important because every Git commit uses this information, and it’s immutably baked into the commits you start creating (它们会写入到你的每一次提交中，不可更改):

$ git config --global user.name "Yongqiang Cheng"
$ git config --global user.email "chengyq******@163.com"

Again, you need to do this only once if you pass the --global option, because then Git will always use that information for anything you do on that system. If you want to override this with a different name or email address for specific projects, you can run the command without the --global option when you’re in that project.
如果使用了 --global 选项，那么该命令只需要运行一次，因为之后无论你在该系统上做任何事情， Git 都会使用那些信息。当你想针对特定项目使用不同的用户名称与邮件地址时，可以在那个项目目录下运行没有 --global 选项的命令来配置。

本地计算机中 Git 初始设置，设定使用者的 Email 和 Name。

设置姓名和邮箱地址

$ git config --global user.name "Firstname Lastname"
$ git config --global user.email "your_email@example.com"

~/.gitconfig 文件内容

[user]
    name = Firstname Lastname
    email = your_email@example.com

git config --list 查看当前设定

$ git config --list
user.name=Firstname Lastname
user.email=your_email@example.com

想更改这些信息时，可以直接编辑这个设置文件

strong@foreverstrong:~$ git config --global user.name "your_email"
strong@foreverstrong:~$ git config --global user.email "your_email@163.com"
strong@foreverstrong:~$ 
strong@foreverstrong:~$ cat ~/.gitconfig 
[user]
	email = your_email@163.com
	name = your_email
strong@foreverstrong:~$

--global 参数是全局 (global) 设定。如果需要帮设定不同的作者，可以在特定目录下进行 Git 设定的时候，加上 --local 参数：

$ git config --local user.name "Firstname Lastname"
$ git config --local user.email "your_email@example.com"

在特定目录下进行操作的时候，就会使用 --local 设定的使用者 Email 和 Name 来进行操作。离开这个特定目录后的 Git 操作，还是会使用预设的 --global 设定。

1.2. 提高命令输出的可读性

将 color.ui 设置为 auto 可以让命令的输出拥有更高的可读性。

$ git config --global color.ui auto

~/.gitconfig 文件内容

[color]
    ui = auto

strong@foreverstrong:~$ git config --global color.ui auto
strong@foreverstrong:~$ 
strong@foreverstrong:~$ cat ~/.gitconfig 
[user]
	email = your_email@163.com
	name = your_email
[color]
	ui = auto
strong@foreverstrong:~$

Please tell me who you are.

yongqiang@yongqiang:~/yongqiang_work/kmeans$ git commit -s

*** Please tell me who you are.

Run

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

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: empty ident name (for <yongqiang@yongqiang.>) not allowed
yongqiang@yongqiang:~/yongqiang_work/kmeans$
yongqiang@yongqiang:~/yongqiang_work/kmeans$ git config --global user.email "***@163.com"
yongqiang@yongqiang:~/yongqiang_work/kmeans$ git config --global user.name "***@163.com"
yongqiang@yongqiang:~/yongqiang_work/kmeans$
yongqiang@yongqiang:~/yongqiang_work/kmeans$ cat ~/.gitconfig
[user]
        email = ***@163.com
        name = ***@163.com
yongqiang@yongqiang:~/yongqiang_work/kmeans$
References
https://yongqiang.blog.csdn.net/

1.3. Your default branch name

By default Git will create a branch called master when you create a new repository with git init. From Git version 2.28 onwards, you can set a different name for the initial branch.

To set main as the default branch name do:

$ git config --global init.defaultBranch main

1.4. Checking Your Settings (检查配置信息)

If you want to check your configuration settings, you can use the git config --list command to list all the settings Git can find at that point:

$ git config --list
user.name=Yongqiang Cheng
user.email=chengyq******@163.com
color.status=auto
color.branch=auto
color.interactive=auto
color.diff=auto
...

You may see keys more than once, because Git reads the same key from different files ([path]/etc/gitconfig and ~/.gitconfig, for example). In this case, Git uses the last value for each unique key it sees.

You can also check what Git thinks a specific key’s value is by typing git config <key> (检查 Git 的某一项配置):

(base) yongqiang@yongqiang:~$ git config user.name
Yongqiang Cheng
(base) yongqiang@yongqiang:~$

References

[1] Yongqiang Cheng, https://yongqiang.blog.csdn.net/
[2] 配置 Git 默认编辑器为 Vim, https://yongqiang.blog.csdn.net/article/details/130233565
[3] (日) 大塚弘记著, 支鹏浩, 刘斌译. GitHub 入门与实践[M]. 北京:人民邮电出版社, 2015. 1-255
[4] 为你自己学 Git, https://gitbook.tw/
[5] Git, https://git-scm.com/文章来源地址https://www.toymoban.com/news/detail-841958.html

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