linux查看jdk安装路径

说明

准备使用jmap但是提示找不到命令 准备切到jdk bin目录执行

[root@iz2ze9ufq5ehrayz6j88saz bin]# jmap
-bash: jmap: command not found

方案一

如果没有配置是取不到的

echo $JAVA_HOME
echo $PATH

方案二

[root@iz2ze9ufq5ehrayz6j88saz bin]# java -version
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
[root@iz2ze9ufq5ehrayz6j88saz bin]# which java
/usr/bin/java
[root@iz2ze9ufq5ehrayz6j88saz bin]# ls -lrt /usr/bin/java
lrwxrwxrwx 1 root root 26 Jul 19  2018 /usr/bin/java -> /usr/java/default/bin/java
[root@iz2ze9ufq5ehrayz6j88saz bin]# ls -lrt  /usr/java/default/bin/java
-rwxr-xr-x 1 root root 8464 Oct  6  2018 /usr/java/default/bin/java
[root@iz2ze9ufq5ehrayz6j88saz bin]# 

安装路径在: /usr/java/default/bin/java

./jmap 执行