Linux如何查看JDK的安装路径

1、查看系统变量

echo $JAVA_HOME

2、使用 which 定位 Java 安装路径

which java
----
/usr/bin/java

ls -lrt /usr/bin/java
----
lrwxrwxrwx 1 root root 22 May 27 03:50 /usr/bin/java -> /etc/alternatives/java

ls -lrt /etc/alternatives/java
----
lrwxrwxrwx 1 root root 46 May 27 03:50 /etc/alternatives/java -> /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java

cd /usr/lib/jvm

ls
----
java-1.7.0-openjdk-amd64  java-7-openjdk-amd64

https://www.cnblogs.com/kerrycode/archive/2015/08/27/4762921.html