标签：open build mode span 安装位置 bit native jre which
[root@lb01 ~]# java -version openjdk version "1.8.0_181" OpenJDK Runtime Environment (build 1.8.0_181-b13) OpenJDK 64-Bit Server VM (build 25.181-b13, mixed mode)
查看环境变量：
[root@lb01 ~]# echo $JAVA_HOME
（为空）
查找java：
[root@lb01 ~]# which java /usr/bin/java [root@lb01 ~]# ls -lrt /usr/bin/java lrwxrwxrwx. 1 root root 22 Oct 25 2019 /usr/bin/java -> /etc/alternatives/java
查看超链接可知道环境变量信息：
[root@lb01 ~]# ls -lrt /etc/alternatives/java lrwxrwxrwx. 1 root root 71 Oct 25 2019 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-7.b13.el7.x86_64/jre/bin/java
所以java环境变量是：
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-7.b13.el7.x86_64/
标签：open build mode span 安装位置 bit native jre which
原文地址：https://www.cnblogs.com/comprehensive/p/12817871.html
