设置仅github.com使用代理

git config --global http.https://github.com.proxy socks5h://localhost:1280

取消以上设置

git config --global --unset http.https://github.com.proxy

配置文件

[http "https://github.com"]
        proxy = socks5://127.0.0.1:1086

https://stackoverflow.com/questions/16067534/only-use-a-proxy-for-certain-git-urls-domains/18712501#18712501 crifan

日志
[年月日时分秒 消息内容] ，--grep筛选内容，--since筛选指定时间之后的记录

git log --date=format:'%Y-%m-%d %H:%M:%S' --pretty=format:"%cd %s" --since="2024-09-29" --grep="筛选消息内容" --reverse

将用户添加到sudo组

usermod -aG sudo [username] 

验证sudo权限

sudo -l -U [username]

https://jumpcloud.com/blog/how-to-create-sudo-users-debian

1. Install sudo. Some installations do not come with sudo installed. If your does not, install sudo with apt.

# apt install sudo

- 阅读剩余部分 -

生成UUID

const id = window.crypto.randomUUID()
console.log(id)
// bd4d099b-3d39-4aad-a59c-c45dfac8eaf0

https://stackoverflow.com/questions/1349404/generate-random-string-characters-in-javascript

在JPA的@OneToOne（一对一）及@OneToMany（一对多）有一个orphanRemoval属性。

例如一個作者(Author)有多本书籍著作(Book)，则在Author类别中会有Book的集合：

Author.java

public class Author {
    ...
    @OneToMany(mappedBy="author", orphanRemoval=true)
    private Set<Book> bookSet;
    
    // getters and setters ommitted  
}

Book.java

public class Book {
    ...
    @ManyToOne
    private Author author;
    
    // getters and setters ommitted
}

orphanRemoval预设值为false。若设为true，则当Author物件中的一本book从bookSet移除時，资料库Book资料表的该本书的列会被删除。

orphan代表孤儿，orphanRemoval=true的意思就是child沒有parent时会被删除。

而和CascadeType.REMOVE不同的是，CascadeType.REMOVE是当Authur物件从资料表中删除時，其所关联的child，也就是所属的bookSet中的每一个Book也会从资料表被一并删除。

https://matthung0807.blogspot.com/2018/06/jpa-onetoone-onetomanyorphanremoval.html

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11. November
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