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卸载openjdk
- 查看openjdk版本
# nangy @ nangy-vm in ~ [22:07:46]
$ java -version
zsh: command not found: java
# nangy @ nangy-vm in ~ [22:09:22] C:127
$ dpkg -l | grep openjdk
- 卸载openjdk
# 本机没有,那就不用卸载,直接安装jdk
下载jdk
- 下载jdk1.8
官网下载
安装jdk
- 安装jdk1.8
# nangy @ nangy-vm in ~ [22:09:35] C:1
$ cp /mnt/hgfs/VMware共享文件/software/jdk-8u211-linux-x64.tar.gz -R /home/nangy/Downloads
# 以下操作切换成root用户
# nangy @ nangy-vm in ~ [22:16:31]
$ su
密码:
# root @ nangy-vm in /home/nangy [22:18:46]
$ cd /opt/
# root @ nangy-vm in /opt [22:19:02]
$ mkdir java
# root @ nangy-vm in /opt [22:19:09]
$ ll
总用量 32K
drwxr-xr-x 3 root root 4.0K 6月 15 21:28 deepinwine
drwxr-xr-x 3 root root 4.0K 6月 15 19:54 google
drwxr-xr-x 2 root root 4.0K 6月 16 22:19 java
drwxr-xr-x 3 root root 4.0K 6月 15 19:55 kingsoft
drwxr-xr-x 9 root root 4.0K 6月 15 19:58 pbis
drwxr-xr-x 4 root root 4.0K 6月 15 19:58 samsung
drwxr-xr-x 7 root root 4.0K 6月 15 19:58 smfp-common
drwxr-xr-x 4 root root 4.0K 6月 16 12:41 teamviewer
# root @ nangy-vm in /opt [22:19:14]
$ tar -zxvf /home/nangy/Downloads/jdk-8u211-linux-x64.tar.gz -C /opt/java
# root @ nangy-vm in /opt/java [22:22:32]
$ cd /opt/java/jdk1.8.0_211
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:22:45]
$ pwd
/opt/java/jdk1.8.0_211
- 配置/etc/profile
root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:22:46]
$ vim /etc/profile
- 添加到/etc/profile尾部
##JAVA_HOME
export JAVA_HOME=/opt/java/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH
- 保存并退出
wq
- 使/etc/profile生效
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:14]
$ source /etc/profile
/etc/profile:35: no matches found: tty[1-6]
- 这里遇到了一个坑
应该是deppin使用第三方shell造成的,至少我使用zsh的时候是这样
解决方法:切换到bash再执行就OK了
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:14]
$ source /etc/profile
/etc/profile:35: no matches found: tty[1-6]
# 切换原生bash
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:15]
$ bash
# 执行source生效
root@nangy-vm:/opt/java/jdk1.8.0_211# source /etc/profile
# 验证jdk版本
root@nangy-vm:/opt/java/jdk1.8.0_211# java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
# 切换回zsh的shell界面
root@nangy-vm:/opt/java/jdk1.8.0_211# zsh
# 验证jdk版本
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:36:20]
$ java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)