2023年3月

1、命令安装

sudo apt install iproute2

2、端口查看

sudo ss -tulpn

参数介绍：
-t, –tcp：查看所有 TCP 套接字
-u, –udp：查看所有 UDP 套接字
-l, –listening：查看所有监听套接字
-p, processes：查看哪些进程正在使用套接字
-n, –numeric：如果您想查看端口号而不是服务名称，请使用此选项

https://www.niuqi360.com/linux/how-to-check-for-open-ports-on-debian-10/

1、java 53-jdk11

vi install_java.sh
#!/bin/bash
# 一键安装java-11-openjdk

cd ~
echo "选择安装版本："；
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
echo ">>>1. 部分安装功能不缺（一百兆左右）>>>";
echo ">>>2. 全部安装 （1G左右）>>>>>>>>>>>>>>";
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
read CHIOCE;
if [ $# == 0 ]; then 
    echo "==> 默认选择 ==> “1”"；
    yum install java-11-openjdk java-11-openjdk-devel -y
else
    if [[ $CHIOCE == '1' ]]; then
        echo "==> 将开始下载部分版本";
        yum install java-11-openjdk java-11-openjdk-devel -y
    elif [[ $CHINCE == '2' ]]; then
        echo "==> 将开始下载完整版本";
        yum install java-11-openjdk* -y
    else
        echo "==> 默认选择 ==> “1”"；
    yum install java-11-openjdk java-11-openjdk-devel -y
        #statements
    fi
fi

if [ $? == 0 ]; then
    echo "==> 设置环境变量！";
    echo "JAVA_HOME=/usr/lib/jvm/java" >> /etc/profile
    echo "PATH=$PATH:$JAVA_HOME/bin" >> /etc/profile
    echo "CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar" >> /etc/profile
    echo "export JAVA_HOME CLASSPATH PATH" >> /etc/profile
else
    echo "==> 执行失败！";
    eixt;
fi

echo "==> 验证："
java -version
javac -version
if [ $? -eq 0 ]; then
    echo "==> 安装成功！";
else
    echo "==> 安装失败！";
fi

2、java jdk1.8

vi install_java.sh
#!/bin/bash
# 一键安装jdk1.8

cd ~
echo "选择安装版本："；
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
echo ">>>1. 部分安装功能不缺（一百兆左右）>>>";
echo ">>>2. 全部安装 （1G左右）>>>>>>>>>>>>>>";
echo ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";
read CHIOCE;
if [ $# == 0 ]; then 
    echo "==> 默认选择 ==> “1”"；
    yum install java-1.8.0-openjdk java-1.8.0-openjdk-devel -y
else
    if [[ $CHIOCE == '1' ]]; then
        echo "==> 将开始下载部分版本";
        yum install java-1.8.0-openjdk java-1.8.0-openjdk-devel -y
    elif [[ $CHINCE == '2' ]]; then
        echo "==> 将开始下载完整版本";
        yum install java-1.8.0-openjdk* -y
    else
        echo "==> 默认选择 ==> “1”"；
    yum install java-1.8.0-openjdk java-1.8.0-openjdk-devel -y
        #statements
    fi
fi

if [ $? == 0 ]; then
    echo "==> 设置环境变量！";
    echo "JAVA_HOME=/usr/lib/jvm/java" >> /etc/profile
    echo "PATH=$PATH:$JAVA_HOME/bin" >> /etc/profile
    echo "CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar" >> /etc/profile
    echo "export JAVA_HOME CLASSPATH PATH" >> /etc/profile
else
    echo "==> 执行失败！";
    eixt;
fi

echo "==> 验证："
java -version
javac -version
if [ $? -eq 0 ]; then
    echo "==> 安装成功！";
else
    echo "==> 安装失败！";
fi
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