# 全局变量
vi /etc/profile # 编辑
PATH=$PATH:/package/app/node/bin
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL # 在该行前面加
source /etc/profile # 生效

# 局部变量
vi ~/.bash_profile # 编辑
alias nodejs=/package/app/node/bin
source ~/.bash_profile # 生效

- 下载地址：https://dev.mysql.com/downloads/mysql
- 解压包，放置一个目录下（不含中文或空格的路径）
- 在 **bin** 同级目录创建 **my.ini** 文件和 **data** 文件夹
- my.ini 文件内容
```
[mysqld]
# 设置3306端口
port=3306
# 设置mysql的安装目录
basedir=E:\\mysql-8.0.22-winx64

# 按用户导出
expdp $USER/$PWD SCHEMAS=$USER DUMPFILE=$DBNAME.dmp LOGFILE=$DBNAME.log DIRECTORY=DATA_PUMP_DIR
# 按表名导出
expdp $USER/$PWD TABLES=($TABLE1,$TABLE2) DUMPFILE=$DBNAME.dmp LOGFILE=$DBNAME.log DIRECTORY=DATA_PUMP_DIR
# 按用户导入（表覆盖）
impdp $USER/$PWD SCHEMAS=$USER DUMPFILE=$DBNAME.dmp LOGFILE=$DBNAME.log DIRECTORY=DATA_PUMP_DIR TABLE_EXISTS_ACTION=REPLACE
# 按用户导入（转换空间）
impdp $USER/$PWD SCHEMAS=$USER TRANSFORM=segment_attributes:n DUMPFILE=$DBNAME.dmp LOGFILE=$DBNAME.log DIRECTORY=DATA_PUMP_DIR TABLE_EXISTS_ACTION=REPLACE

# DIRECTORY 参数说明

:: 显示监听的IP列表
netsh http show iplisten

:: 添加监听IP
netsh http add iplisten ipaddress=127.0.0.1

:: 删除监听IP
netsh http delete iplisten 127.0.0.1

@echo off
title .NET Framework Register IIS
color 5f

echo.---------- .NET Framework v2 Register IIS
echo.

%windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i
%windir%\Microsoft.NET\Framework64\v2.0.50727\aspnet_regiis.exe -i

@echo off
title Install IIS
color 5f

echo.---------- Install IIS about 3-5 Minutes
echo.

dism /Online /Enable-Feature /FeatureName:IIS-ApplicationDevelopment	/FeatureName:IIS-ASP	/FeatureName:IIS-ASPNET    /FeatureName:IIS-BasicAuthentication    /FeatureName:IIS-CGI    /FeatureName:IIS-ClientCertificateMappingAuthentication    /FeatureName:IIS-CommonHttpFeatures    /FeatureName:IIS-CustomLogging    /FeatureName:IIS-DefaultDocument    /FeatureName:IIS-DigestAuthentication   /FeatureName:IIS-DirectoryBrowsing   /FeatureName:IIS-FTPExtensibility   /FeatureName:IIS-FTPServer   /FeatureName:IIS-FTPSvc   /FeatureName:IIS-HealthAndDiagnostics   /FeatureName:IIS-HostableWebCore   /FeatureName:IIS-HttpCompressionDynamic   /FeatureName:IIS-HttpCompressionStatic   /FeatureName:IIS-HttpErrors   /FeatureName:IIS-HttpLogging   /FeatureName:IIS-HttpRedirect   /FeatureName:IIS-HttpTracing   /FeatureName:IIS-IIS6ManagementCompatibility   /FeatureName:IIS-IISCertificateMappingAuthentication   /FeatureName:IIS-IPSecurity   /FeatureName:IIS-ISAPIExtensions   /FeatureName:IIS-ISAPIFilter   /FeatureName:IIS-LegacyScripts   /FeatureName:IIS-LegacySnapIn   /FeatureName:IIS-LoggingLibraries   /FeatureName:IIS-ManagementConsole   /FeatureName:IIS-ManagementScriptingTools   /FeatureName:IIS-ManagementService   /FeatureName:IIS-Metabase   /FeatureName:IIS-NetFxExtensibility   /FeatureName:IIS-ODBCLogging   /FeatureName:IIS-Performance   /FeatureName:IIS-RequestFiltering   /FeatureName:IIS-RequestMonitor   /FeatureName:IIS-Security   /FeatureName:IIS-ServerSideIncludes   /FeatureName:IIS-StaticContent   /FeatureName:IIS-URLAuthorization   /FeatureName:IIS-WebDAV   /FeatureName:IIS-WebServer   /FeatureName:IIS-WebServerManagementTools   /FeatureName:IIS-WebServerRole   /FeatureName:IIS-WindowsAuthentication   /FeatureName:IIS-WMICompatibility   /FeatureName:WAS-ConfigurationAPI   /FeatureName:WAS-NetFxEnvironment   /FeatureName:WAS-ProcessModel   /FeatureName:WAS-WindowsActivationService
dism /online /enable-feature /featurename:IIS-ISAPIFilter
dism /online /enable-feature /featurename:IIS-ISAPIExtensions

locale # 当前语言包

locale -a # 系统拥有语言包（zh_CN.UTF-8是简体中文，如果没有zh_CN.UTF-8,就安装语言包，如果存在可以直接设置)

# CentOS 7
yum install kde-l10n-Chinese # 安装简体中文语言包

# CentOS 8
dnf search langpacks # 搜索语言包
dnf install langpacks-zh_CN.noarch # 安装中文语言

lsblk # 检查磁盘
fdisk -l # 查看所有磁盘信息(含未加载磁盘)

fdisk /dev/sdb # 对磁盘分区，大于2T时，用parted
# 输入 m 显示菜单，选择 n 创建分区，再选择 p（主分区）或 e（扩展分区），再确认 2048 ，再确认（默认整个磁盘）或自定义 +100G，再输入 w
partprobe /dev/sdb # 内核重新读取分区表
mkfs.ext4 /dev/sdb1 # 格式化分区（磁盘分区，非整个磁盘）
mkdir /mnt/package1 # 创建挂载目录
mount /dev/sdb1 /mnt/package1 # 临时挂载目录
vi /etc/fstab # 编辑 永久挂载，追加如下内容：

# 登录mysql，查看默认存储路径，一般在 /var/lib/mysql
show global variables like '%datadir%';

mkdir -p /package/mysqldata # 新建目录
cp -a -R /var/lib/mysql/* /package/mysqldata/ # 拷贝
chown mysql:mysql /package/mysqldata # 将目录授权给mysql用户组
chmod 750 /package/mysqldata # 更改目录权限

systemctl stop mysqld # 停止mysql服务
vi /etc/my.cnf # 修改datadir socket 为如下：

### 清理

```
# 查找并删除mysql(原本的残留)
rpm -qa | grep mysql # 查找
yum remove 软件包名 # 删除

# 查找并删除mariaDB
rpm -qa | grep mariadb # 查找
rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64 # 删除