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systemd 服务配置文件

创建一个名为 system.service 的文件，通常位于 /etc/systemd/system/ 目录下。

/etc/systemd/system/system.service 示例

[Unit]
Description=System Service
After=network.target

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#!/bin/bash
#
# Install Oracle JDK 8 for use with SDKMAN
#

set -eu

# This URL can be discovered using https://sites.google.com/view/java-se-download-url-converter
DOWNLOAD_URL="https://javadl.oracle.com/webapps/download/GetFile/1.8.0_331-b09/165374ff4ea84ef0bbd821706e29b123/linux-i586/jdk-8u331-linux-x64.tar.gz"
TARBALL="jdk-8u331-linux-x64.tar.gz"

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MySQL Download URL

https://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.46-linux-glibc2.12-x86_64.tar.gz

Open the terminal and follow along:

• Uninstall any existing version of MySQL

sudo rm /var/lib/mysql/ -R

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// month can be [1,2,3,4,5,6,7,8,9,10,11,12]

int quarter = (month - 24) / 3 + 8;



// month can be [0-11] ,just as calendar.get(Calendar.MONTH)
int quarter = (month-1) / 3+1