loficafe/logs

• 👋 Hi, I’m @lofiCafe
• 👀 I’m interested in reading, programming, jogging and swimming.
• 🌱 I’m currently learning Rust

logs's Issues

sm4

https://github.com/tjfoc/gmsm/blob/6f3ec5ee0ff656730d79e8db02a32ad8e5aaaafa/API%E4%BD%BF%E7%94%A8%E8%AF%B4%E6%98%8E.md

在MySQL中使用replace

更新语句的时候需要批量对某一个字段里面的字符做修改，例如以下,修改表mytable域dir里面字符bak为backup
update mytable set dir=replace(dir, "bak", "backup");
参考链接

fish shell 设置永久环境变量

今天在设置goproxy的时候发现打开了一个新的shell之后发现goproxy不生效了，于是去查看了fish的文档，发现
set -x GOPROXY https://goproxy.io,direct 只是临时生效，如果需要全局生效，需要这样设置set -Ux GOPROXY https://goproxy.io,direct

Go中的slice

func main() {

        s := make([]int, 12)
        s = append(s, 1)
        s = append(s, 2)
        s = append(s, 3)
        s = append(s, 5)

        for i, v := range s {
                fmt.Printf("idx: %d value: %d\n", i, v)
        }
        // task(credential)
}

输出结果为

idx: 1 value: 0
idx: 2 value: 0
idx: 3 value: 0
idx: 4 value: 0
idx: 5 value: 0
idx: 6 value: 0
idx: 7 value: 0
idx: 8 value: 0
idx: 9 value: 0
idx: 10 value: 0
idx: 11 value: 0
idx: 12 value: 1
idx: 13 value: 2
idx: 14 value: 3
idx: 15 value: 5

感觉有点类似栈，输出的0 是默认的零值，因为声明的是一个INT length为12的slice

记录一则Nginx容器下的错误

静态资源文件放到了/usr/share/nginx/html下面，忘记在Dockerfile里面赋予755权限，导致打不开页面 = =

top command

neovim python3 ide requirements

• pip3 install 'python-language-server[all]'
• pip3 install jedi
• open neovim
• Coc-install coc-python

Arch linux install dwm, st and dmenu

installing-st-dmenu-dwm-in-arch-linux

normal user can not switch to root

• check permission of /etc/passwd make sure that the file permission is 644
• check permission of /usr/bin/su make sure that the file have -s flag using chmod u+s /usr/bin/su
• check permission of /usr/bin/sudo make sure that the file have -s flag using chmod u+s /usr/bin/sudo

Tomcat容器自动退出

部署geoserver地图应用，由于该应用需要依赖tomcat去部署，一开始我的只是加了一个CMD /app/gis/tomcat/bin/startup.sh这样子启动容器，docker logs geoserver查看tomcat启动好之后就退出了，之后改成 CMD /app/gis/tomcat/bin/startup.sh && tail -2000f /app/gis/tomcat/logs/catalina.out就ok了