linux反向查找jdk的安装路径

1. 逐步查找

[root@VM-0-8-centos jvm]# which java
/usr/bin/java
[root@VM-0-8-centos jvm]# clear
[root@VM-0-8-centos jvm]# which java
/usr/bin/java
[root@VM-0-8-centos jvm]# ls -lrt /usr/bin/java
lrwxrwxrwx 1 root root 22 Mar 27 14:58 /usr/bin/java -> /etc/alternatives/java
[root@VM-0-8-centos jvm]# ls -lrt /etc/alternatives/java
lrwxrwxrwx 1 root root 73 Mar 27 14:58 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-1.el7_9.x86_64/jre/bin/java
[root@VM-0-8-centos jvm]#

1. 实际安装地址如下

/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-1.el7_9.x86_64/jre/bin/java

1. …

linux jps命令报错-bash: jps: command not found

1. 删除原先的软连接
2. 建立正确的安装地址

[root@VM-0-8-centos bin]# which java
/usr/bin/java
[root@VM-0-8-centos bin]# sudo rm /usr/bin/java
[root@VM-0-8-centos bin]# sudo ln -s /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-1.el7_9.x86_64/jre/bin/java /usr/bin/java
[root@VM-0-8-centos bin]#

1. 配置环境变量

sudo vim /etc/profile
# 编辑一下信息
export PATH=$PATH:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.282.b08-1.el7_9.x86_64/jre/bin
# 使之生效
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