How to use Xshell to connect to the server and install JDK

[root@dwl ~]# rz -bash: rz: 未找到命令 [root@dwl ~]# yum install -y lrzsz 已加载插件：fastestmirror, langpacks Determining fastest mirrors * base: mirrors.aliyun.com * extras: mirror.lzu.edu.cn * updates: mirrors.neusoft.edu.cn base | 3.6 kB 00:00:00 extras | 3.4 kB 00:00:00 updates | 3.4 kB 00:00:00 (1/4): base/7/x86_64/group_gz | 166 kB 00:00:00 (2/4): extras/7/x86_64/primary_db | 174 kB 00:00:01 (3/4): updates/7/x86_64/primary_db | 5.0 MB 00:00:16 (4/4): base/7/x86_64/primary_db | 5.9 MB 00:00:20 正在解决依赖关系 --> 正在检查事务 ---> 软件包 lrzsz.x86_64.0.0.12.20-36.el7 将被 安装 --> 解决依赖关系完成 依赖关系解决 ==================================================================================================================== Package 架构 版本 源 大小 ==================================================================================================================== 正在安装: lrzsz x86_64 0.12.20-36.el7 base 78 k 事务概要 ==================================================================================================================== 安装 1 软件包 总下载量：78 k 安装大小：181 k Downloading packages: 警告：/var/cache/yum/x86_64/7/base/packages/lrzsz-0.12.20-36.el7.x86_64.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID f4a80eb5: NOKEY lrzsz-0.12.20-36.el7.x86_64.rpm 的公钥尚未安装 lrzsz-0.12.20-36.el7.x86_64.rpm | 78 kB 00:00:00 从 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 检索密钥 导入 GPG key 0xF4A80EB5: 用户ID : "CentOS-7 Key (CentOS 7 Official Signing Key) " 指纹 : 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5 软件包 : centos-release-7-5.1804.el7.centos.x86_64 (@anaconda) 来自 : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 Running transaction check Running transaction test Transaction test succeeded Running transaction 正在安装 : lrzsz-0.12.20-36.el7.x86_64 1/1 验证中 : lrzsz-0.12.20-36.el7.x86_64 1/1 已安装: lrzsz.x86_64 0:0.12.20-36.el7 完毕！ [root@dwl ~]#

sudo tar -vxf jdk-8u181-linux-x64.tar.gz -C/usr/local

[root@dwl ~]# sudo vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.8.0_181 export JRE_HOME=${JAVA_HOME}/jre exportCLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH

[root@dwl ~]# source /etc/profile [root@dwl ~]# java -version java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)