Linux下查找JDK默认安装路径

Linux下查找JDK默认安装路径

1. 确认是否安装JDK

   java -version
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2. 查找java命令的位置

   which java
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   [root@a]# which java
   /usr/bin/java
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3. java命令的位置所对于的软链地址

   ls -l /usr/bin/java
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   [root@a]# ls -l /usr/bin/java
   lrwxrwxrwx 1 root root 22 Jun 18 15:45 /usr/bin/java -> /etc/alternatives/java
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4. 通过软链地址查找JDK的安装目录

   ls -l /etc/alternatives/java
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   [root@a]# ls -l /etc/alternatives/java
   lrwxrwxrwx 1 root root 73 Jun 29 15:45 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64/jre/bin/java
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   所以安装目录为： /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64/jre/bin/java