开发资料大全（个人整理，长期维护）-优快云博客

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Handy Note

DB

Use navicat11 client to connect localhost mysql database and get Client does not support authentication protocol requested by server; consider upgrading MySQL client

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'newpass';
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IDE

idea2018 active code

http://idea.lanyus.com/
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use zsh as the default shell in vscode

Open User Settings and search terminal.integrated.shell.osx
Set it to /bin/zsh

use `code` command to open a project with vscode quickly in shell

Command+Shift+P and search shell command
Choose Install 'code' command in PATH

preview markdown file real time in vscode

Command+Shift+P and search markdown
Choose Open locked preview to the side

Maven

环境变量

vim ~/.bash_profile
export M2_HOME=/Users/username/Documents/maven #这里是你maven的路径
export PATH=$PATH:$M2_HOME/bin
source ~/.bash_profile

mvn -v
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插件使用

插件问题

maven-plugins-can-not-be-found-in-intellij

Linux

查看Linux系统版本

lsb_release -a
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lsb = Linux Standard Base

CPU使用情况

top
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CPU信息

cat /proc/cpuinfo |more
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查看内存

free -m
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查看磁盘

df -h
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fdisk -l
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命令解读

which&where

which & whereis

/usr/bin和/usr/local/bin区别

/usr/bin & /usr/local/bin

MacOS

use zsh as the default shell

See the shells you already installed with the command

cat /etc/shells
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Set zsh as the default shell

chsh -s /usr/local/bin/zsh
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(Optional)If you want to configure zsh mannually, use

vim ~/.zshrc
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After change .zshrc, do remember to source it to make it work

source ~/.zshrc
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(Restore default shell)

chsh -s /bin/bash
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Git

初始化git

查看配置

git config --list
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初始化用户和邮箱

git config --global user.name "your name"
git config --global user.email your email
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本地生成ssh key并放在远端以实现SSH访问

Generate a ssh key locally

ssh-keygen -o
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Catch your key just generated before

cat ~/.ssh/id_rsa.pub
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Put it into your ssh keys in your romote repository

解决使用vs code打开从github上git clone下来的项目，修改后并做git remote关联，在git push时每次都要输入账号和密码

存储全局账号

git config --global credential.helper wincred
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git全局配置用户名，因误操作产生多条配置，导致无法修改

产生背景

使用如下错误命令及参数修改配置

git config --global user.name = "M1kewang"
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首先修改配置项user.name并不需要等号，也不需要引号

这样配置的结果就是产生了两条user.name，如下

git config -l

user.name=magi
user.name==
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即产生了一条user.name值为一个等号的记录

此时再去对user.name这个属性操作即会报错，因为存在两条同属性名的属性，git会混乱，而不知道你要操作的是哪个属性配置

具体报错

warning: user.name has multiple values
error: cannot overwrite multiple values with a single value
       Use a regexp, --add or --replace-all to change user.name.
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解决方案

先看一下git存在哪些配置参数

git config
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发现里面有个--unset参数，用于remove一个variable（在git中，配置被当做全局变量被存储，这和MySQL很像）

但是尝试这样修改，并不理想，会提示你要修改的属性存在多条记录

warning: user.name has multiple values
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正确的方法应该是对这个属性进行批量操作，即对所有同名的属性值进行修改

git config --global --replace-all user.name M1kewang
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这样就git会把修改后的两条相同属性合并为一条，恢复正常

Github

上传本地项目到github

Get into your project folder and git init, then a .git folder was created.
Add your files to git.

git add .
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Commit your added files to the stage area.

git commit -m "write your comment"
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Link your local git project with your GitHub repository.

git remote add origin https://github.com/youraccount/yourrepository.git
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Pull the existed files of your current GitHub repository.

git pull origin master
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Fix the conflicts if there exist.
Push your local project managed by git to your remote GitHub repository.

git push -u origin master
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Done.

Gitlab

install-on-ubuntu

Terminal

nslookup 域名相关

TODO

[ ] nslookup